diff --git a/build.gradle b/build.gradle
index ad577bd..938ceb9 100644
--- a/build.gradle
+++ b/build.gradle
@@ -46,6 +46,7 @@ dependencies {
     // spring cloud
     implementation 'org.springframework.cloud:spring-cloud-starter-netflix-eureka-client'
     implementation 'org.springframework.cloud:spring-cloud-starter-openfeign'
+    implementation 'org.springframework.cloud:spring-cloud-starter-circuitbreaker-resilience4j'
 
     // lombok
     compileOnly 'org.projectlombok:lombok'
diff --git a/src/main/java/com/wl2c/elswhereuserservice/client/product/api/ProductServiceClient.java b/src/main/java/com/wl2c/elswhereuserservice/client/product/api/ProductServiceClient.java
index 4151e1d..758a0c7 100644
--- a/src/main/java/com/wl2c/elswhereuserservice/client/product/api/ProductServiceClient.java
+++ b/src/main/java/com/wl2c/elswhereuserservice/client/product/api/ProductServiceClient.java
@@ -1,13 +1,23 @@
 package com.wl2c.elswhereuserservice.client.product.api;
 
+import com.wl2c.elswhereuserservice.client.product.dto.request.RequestProductIdListDto;
 import com.wl2c.elswhereuserservice.client.product.dto.response.ResponseSingleProductDto;
+import com.wl2c.elswhereuserservice.client.product.dto.response.ResponseSummarizedProductDto;
+import jakarta.validation.Valid;
 import org.springframework.cloud.openfeign.FeignClient;
 import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+
+import java.util.List;
 
 @FeignClient(name = "product-service")
 public interface ProductServiceClient {
 
     @GetMapping("/product/{productId}")
     ResponseSingleProductDto getProduct(@PathVariable Long productId);
+
+    @PostMapping("/product/list")
+    List<ResponseSummarizedProductDto> listByProductIds(@Valid @RequestBody RequestProductIdListDto requestProductIdListDto);
 }
diff --git a/src/main/java/com/wl2c/elswhereuserservice/client/product/dto/request/RequestProductIdListDto.java b/src/main/java/com/wl2c/elswhereuserservice/client/product/dto/request/RequestProductIdListDto.java
new file mode 100644
index 0000000..4c677c8
--- /dev/null
+++ b/src/main/java/com/wl2c/elswhereuserservice/client/product/dto/request/RequestProductIdListDto.java
@@ -0,0 +1,20 @@
+package com.wl2c.elswhereuserservice.client.product.dto.request;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Getter;
+
+import java.util.List;
+
+@Getter
+public class RequestProductIdListDto {
+
+    @Schema(description = "상품 id 리스트", example = "[3, 6, 9, 12]")
+    private final List<Long> productIdList;
+
+    @JsonCreator
+    public RequestProductIdListDto(@JsonProperty("productIdList") List<Long> productIdList) {
+        this.productIdList = productIdList;
+    }
+}
diff --git a/src/main/java/com/wl2c/elswhereuserservice/client/product/dto/response/ResponseSummarizedProductDto.java b/src/main/java/com/wl2c/elswhereuserservice/client/product/dto/response/ResponseSummarizedProductDto.java
new file mode 100644
index 0000000..13748d8
--- /dev/null
+++ b/src/main/java/com/wl2c/elswhereuserservice/client/product/dto/response/ResponseSummarizedProductDto.java
@@ -0,0 +1,41 @@
+package com.wl2c.elswhereuserservice.client.product.dto.response;
+
+import com.wl2c.elswhereuserservice.client.product.ProductType;
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Builder;
+import lombok.Getter;
+
+import java.math.BigDecimal;
+import java.time.LocalDate;
+
+@Getter
+@Builder
+public class ResponseSummarizedProductDto {
+    @Schema(description = "상품 id", example = "1")
+    private final Long id;
+
+    @Schema(description = "발행 회사", example = "oo투자증권")
+    private final String issuer;
+
+    @Schema(description = "상품명", example = "oo투자증권 99999")
+    private final String name;
+
+    @Schema(description = "상품 유형", example = "STEP_DOWN or LIZARD or MONTHLY_PAYMENT or ETC")
+    private final ProductType productType;
+
+    @Schema(description = "기초자산", example = "KOSPI200 Index / HSCEI Index / S&P500 Index")
+    private final String equities;
+
+    @Schema(description = "수익률", example = "20.55")
+    private final BigDecimal yieldIfConditionsMet;
+
+    @Schema(description = "낙인 값", example = "45, 낙인 값이 없을 시 null return")
+    private final Integer knockIn;
+
+    @Schema(description = "청약 시작일", example = "2024-06-14")
+    private final LocalDate subscriptionStartDate;
+
+    @Schema(description = "청약 마감일", example = "2024-06-21")
+    private final LocalDate subscriptionEndDate;
+
+}
diff --git a/src/main/java/com/wl2c/elswhereuserservice/domain/user/controller/UserInterestController.java b/src/main/java/com/wl2c/elswhereuserservice/domain/user/controller/UserInterestController.java
new file mode 100644
index 0000000..e84f4d8
--- /dev/null
+++ b/src/main/java/com/wl2c/elswhereuserservice/domain/user/controller/UserInterestController.java
@@ -0,0 +1,58 @@
+package com.wl2c.elswhereuserservice.domain.user.controller;
+
+import com.wl2c.elswhereuserservice.client.product.dto.response.ResponseSummarizedProductDto;
+import com.wl2c.elswhereuserservice.domain.user.model.dto.request.RequestCreateInterestDto;
+import com.wl2c.elswhereuserservice.domain.user.model.dto.response.ResponseUserInterestDto;
+import com.wl2c.elswhereuserservice.domain.user.service.UserInterestService;
+import com.wl2c.elswhereuserservice.global.model.dto.ResponseIdDto;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.validation.Valid;
+import lombok.RequiredArgsConstructor;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+import static java.lang.Long.parseLong;
+
+@Tag(name = "사용자의 관심 상품", description = "사용자의 관심 상품 관련 api")
+@RestController
+@RequestMapping("/v1/interest")
+@RequiredArgsConstructor
+public class UserInterestController {
+
+    private final UserInterestService userInterestService;
+
+    /**
+     * 관심 상품 등록
+     *
+     * @param dto 등록하고자 하는 상품 id
+     * @return 관심 상품 id
+     */
+    @PostMapping
+    public ResponseIdDto create(HttpServletRequest request,
+                                @Valid @RequestBody RequestCreateInterestDto dto) {
+        return userInterestService.create(parseLong(request.getHeader("requestId")), dto);
+    }
+
+    /**
+     * 사용자의 관심 상품 리스트 조회
+     *
+     * @return 사용자가 등록한 관심 상품 리스트
+     */
+    @GetMapping
+    public List<ResponseUserInterestDto> read(HttpServletRequest request) {
+        return userInterestService.read(parseLong(request.getHeader("requestId")));
+    }
+
+    /**
+     * 특정 관심 상품 삭제
+     *
+     * @param id 삭제할 관심 상품 id
+     */
+    @DeleteMapping("/{id}")
+    public void delete(HttpServletRequest request,
+                       @PathVariable Long id) {
+        userInterestService.delete(parseLong(request.getHeader("requestId")), id);
+    }
+}
diff --git a/src/main/java/com/wl2c/elswhereuserservice/domain/user/exception/AlreadyInterestException.java b/src/main/java/com/wl2c/elswhereuserservice/domain/user/exception/AlreadyInterestException.java
new file mode 100644
index 0000000..d3dbfd3
--- /dev/null
+++ b/src/main/java/com/wl2c/elswhereuserservice/domain/user/exception/AlreadyInterestException.java
@@ -0,0 +1,10 @@
+package com.wl2c.elswhereuserservice.domain.user.exception;
+
+import com.wl2c.elswhereuserservice.global.exception.LocalizedMessageException;
+import org.springframework.http.HttpStatus;
+
+public class AlreadyInterestException extends LocalizedMessageException {
+    public AlreadyInterestException() {
+        super(HttpStatus.BAD_REQUEST, "already.interest");
+    }
+}
diff --git a/src/main/java/com/wl2c/elswhereuserservice/domain/user/exception/InterestNotFoundException.java b/src/main/java/com/wl2c/elswhereuserservice/domain/user/exception/InterestNotFoundException.java
new file mode 100644
index 0000000..4ef3515
--- /dev/null
+++ b/src/main/java/com/wl2c/elswhereuserservice/domain/user/exception/InterestNotFoundException.java
@@ -0,0 +1,8 @@
+package com.wl2c.elswhereuserservice.domain.user.exception;
+
+import com.wl2c.elswhereuserservice.global.exception.LocalizedMessageException;
+import org.springframework.http.HttpStatus;
+
+public class InterestNotFoundException extends LocalizedMessageException {
+    public InterestNotFoundException() { super(HttpStatus.NOT_FOUND, "notfound.interest-product"); }
+}
diff --git a/src/main/java/com/wl2c/elswhereuserservice/domain/user/model/dto/request/RequestCreateInterestDto.java b/src/main/java/com/wl2c/elswhereuserservice/domain/user/model/dto/request/RequestCreateInterestDto.java
new file mode 100644
index 0000000..9fa48c0
--- /dev/null
+++ b/src/main/java/com/wl2c/elswhereuserservice/domain/user/model/dto/request/RequestCreateInterestDto.java
@@ -0,0 +1,20 @@
+package com.wl2c.elswhereuserservice.domain.user.model.dto.request;
+
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Getter;
+
+import java.util.List;
+
+@Getter
+public class RequestCreateInterestDto {
+
+    @Schema(description = "상품 id", example = "3")
+    private final Long productId;
+
+    @JsonCreator
+    public RequestCreateInterestDto(@JsonProperty("productId") Long productId) {
+        this.productId = productId;
+    }
+}
diff --git a/src/main/java/com/wl2c/elswhereuserservice/domain/user/model/dto/response/ResponseUserInterestDto.java b/src/main/java/com/wl2c/elswhereuserservice/domain/user/model/dto/response/ResponseUserInterestDto.java
new file mode 100644
index 0000000..fbe813e
--- /dev/null
+++ b/src/main/java/com/wl2c/elswhereuserservice/domain/user/model/dto/response/ResponseUserInterestDto.java
@@ -0,0 +1,60 @@
+package com.wl2c.elswhereuserservice.domain.user.model.dto.response;
+
+import com.wl2c.elswhereuserservice.client.product.ProductType;
+import com.wl2c.elswhereuserservice.client.product.dto.response.ResponseSummarizedProductDto;
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Builder;
+import lombok.Getter;
+import lombok.NonNull;
+
+import java.math.BigDecimal;
+import java.time.LocalDate;
+
+@Getter
+public class ResponseUserInterestDto {
+
+    @Schema(description = "사용자 관심 상품 id", example = "1")
+    private final Long interestId;
+
+    @Schema(description = "상품 id", example = "3")
+    private final Long productId;
+
+    @Schema(description = "발행 회사", example = "oo투자증권")
+    private final String issuer;
+
+    @Schema(description = "상품명", example = "oo투자증권 99999")
+    private final String name;
+
+    @Schema(description = "상품 유형", example = "STEP_DOWN or LIZARD or MONTHLY_PAYMENT or ETC")
+    private final ProductType productType;
+
+    @Schema(description = "기초자산", example = "KOSPI200 Index / HSCEI Index / S&P500 Index")
+    private final String equities;
+
+    @Schema(description = "수익률", example = "20.55")
+    private final BigDecimal yieldIfConditionsMet;
+
+    @Schema(description = "낙인 값", example = "45, 낙인 값이 없을 시 null return")
+    private final Integer knockIn;
+
+    @Schema(description = "청약 시작일", example = "2024-06-14")
+    private final LocalDate subscriptionStartDate;
+
+    @Schema(description = "청약 마감일", example = "2024-06-21")
+    private final LocalDate subscriptionEndDate;
+
+    public ResponseUserInterestDto(@NonNull Long interestId,
+                                   @NonNull ResponseSummarizedProductDto responseSummarizedProductDto) {
+        this.interestId = interestId;
+        this.productId = responseSummarizedProductDto.getId();
+        this.issuer = responseSummarizedProductDto.getIssuer();
+        this.name = responseSummarizedProductDto.getName();
+        this.productType = responseSummarizedProductDto.getProductType();
+        this.equities = responseSummarizedProductDto.getEquities();
+        this.yieldIfConditionsMet = responseSummarizedProductDto.getYieldIfConditionsMet();
+        this.knockIn = responseSummarizedProductDto.getKnockIn();
+        this.subscriptionStartDate = responseSummarizedProductDto.getSubscriptionStartDate();
+        this.subscriptionEndDate = responseSummarizedProductDto.getSubscriptionEndDate();
+    }
+
+}
diff --git a/src/main/java/com/wl2c/elswhereuserservice/domain/user/model/entity/Interest.java b/src/main/java/com/wl2c/elswhereuserservice/domain/user/model/entity/Interest.java
new file mode 100644
index 0000000..b507f95
--- /dev/null
+++ b/src/main/java/com/wl2c/elswhereuserservice/domain/user/model/entity/Interest.java
@@ -0,0 +1,39 @@
+package com.wl2c.elswhereuserservice.domain.user.model.entity;
+
+import com.wl2c.elswhereuserservice.domain.user.model.AlarmStatus;
+import com.wl2c.elswhereuserservice.global.base.BaseEntity;
+import jakarta.persistence.*;
+import jakarta.validation.constraints.NotNull;
+import lombok.*;
+
+import static jakarta.persistence.EnumType.STRING;
+
+@Entity
+@Getter
+@NoArgsConstructor(access = AccessLevel.PROTECTED)
+public class Interest extends BaseEntity {
+
+    @Id
+    @GeneratedValue
+    @Column(name = "interest_id")
+    private Long id;
+
+    @ManyToOne(fetch = FetchType.LAZY)
+    @JoinColumn(name = "user_id")
+    private User user;
+
+    @NotNull
+    private Long productId;
+
+    @Enumerated(STRING)
+    private AlarmStatus subscriptionEndDateAlarm;
+
+    @Builder
+    public Interest(User user,
+                    @NonNull Long productId) {
+        this.user = user;
+        this.productId = productId;
+        this.subscriptionEndDateAlarm = AlarmStatus.ACTIVE;
+    }
+
+}
diff --git a/src/main/java/com/wl2c/elswhereuserservice/domain/user/model/entity/User.java b/src/main/java/com/wl2c/elswhereuserservice/domain/user/model/entity/User.java
index d562a64..c1e3047 100644
--- a/src/main/java/com/wl2c/elswhereuserservice/domain/user/model/entity/User.java
+++ b/src/main/java/com/wl2c/elswhereuserservice/domain/user/model/entity/User.java
@@ -51,6 +51,9 @@ public class User extends BaseEntity {
     @OneToMany(mappedBy = "user", cascade = CascadeType.ALL, orphanRemoval = true)
     private List<Holding> holdingList = new ArrayList<>();
 
+    @OneToMany(mappedBy = "user", cascade = CascadeType.ALL, orphanRemoval = true)
+    private List<Interest> interestList = new ArrayList<>();
+
     @Builder
     private User (@NonNull String socialId,
                   @NonNull SocialType socialType,
diff --git a/src/main/java/com/wl2c/elswhereuserservice/domain/user/repository/UserInterestRepository.java b/src/main/java/com/wl2c/elswhereuserservice/domain/user/repository/UserInterestRepository.java
new file mode 100644
index 0000000..f209dd6
--- /dev/null
+++ b/src/main/java/com/wl2c/elswhereuserservice/domain/user/repository/UserInterestRepository.java
@@ -0,0 +1,28 @@
+package com.wl2c.elswhereuserservice.domain.user.repository;
+
+import com.wl2c.elswhereuserservice.domain.user.model.entity.Interest;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Modifying;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
+
+import java.util.List;
+import java.util.Optional;
+
+public interface UserInterestRepository extends JpaRepository<Interest, Long> {
+
+    @Modifying(clearAutomatically = true)
+    @Query("delete from Interest i " +
+            "where i.id = :id and i.user.id = :userId ")
+    void deleteInterest(@Param("userId") Long userId,
+                       @Param("id") Long id);
+
+    @Query("select i from Interest i where i.user.id = :userId ")
+    List<Interest> findAllByUserId(@Param("userId") Long userId);
+
+    @Query("select i from Interest i " +
+            "where i.user.id = :userId " +
+            "and i.productId = :productId ")
+    Optional<Interest> findByUserIdAndProductId(@Param("userId") Long userId,
+                                                @Param("productId") Long productId);
+}
diff --git a/src/main/java/com/wl2c/elswhereuserservice/domain/user/service/UserInterestService.java b/src/main/java/com/wl2c/elswhereuserservice/domain/user/service/UserInterestService.java
new file mode 100644
index 0000000..66c2716
--- /dev/null
+++ b/src/main/java/com/wl2c/elswhereuserservice/domain/user/service/UserInterestService.java
@@ -0,0 +1,103 @@
+package com.wl2c.elswhereuserservice.domain.user.service;
+
+import com.wl2c.elswhereuserservice.client.product.api.ProductServiceClient;
+import com.wl2c.elswhereuserservice.client.product.dto.request.RequestProductIdListDto;
+import com.wl2c.elswhereuserservice.client.product.dto.response.ResponseSingleProductDto;
+import com.wl2c.elswhereuserservice.client.product.dto.response.ResponseSummarizedProductDto;
+import com.wl2c.elswhereuserservice.client.product.exception.ProductNotFoundException;
+import com.wl2c.elswhereuserservice.domain.user.exception.AlreadyInterestException;
+import com.wl2c.elswhereuserservice.domain.user.exception.InterestNotFoundException;
+import com.wl2c.elswhereuserservice.domain.user.exception.UserNotFoundException;
+import com.wl2c.elswhereuserservice.domain.user.model.dto.request.RequestCreateInterestDto;
+import com.wl2c.elswhereuserservice.domain.user.model.dto.response.ResponseUserInterestDto;
+import com.wl2c.elswhereuserservice.domain.user.model.entity.Interest;
+import com.wl2c.elswhereuserservice.domain.user.model.entity.User;
+import com.wl2c.elswhereuserservice.domain.user.repository.UserInterestRepository;
+import com.wl2c.elswhereuserservice.domain.user.repository.UserRepository;
+import com.wl2c.elswhereuserservice.global.model.dto.ResponseIdDto;
+import feign.FeignException;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.cloud.client.circuitbreaker.CircuitBreaker;
+import org.springframework.cloud.client.circuitbreaker.CircuitBreakerFactory;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.stream.Collectors;
+
+@Service
+@RequiredArgsConstructor
+@Transactional(readOnly = true)
+@Slf4j
+public class UserInterestService {
+
+    private final CircuitBreakerFactory circuitBreakerFactory;
+
+    private final UserRepository userRepository;
+    private final UserInterestRepository userInterestRepository;
+
+    private final ProductServiceClient productServiceClient;
+
+    @Transactional
+    public ResponseIdDto create(Long userId, RequestCreateInterestDto requestCreateInterestDto) {
+
+        User user = userRepository.findById(userId).orElseThrow(UserNotFoundException::new);
+
+        CircuitBreaker circuitBreaker = circuitBreakerFactory.create("interestCreateCircuitBreaker");
+        circuitBreaker.run(() -> productServiceClient.getProduct(requestCreateInterestDto.getProductId()),
+                throwable -> new ProductNotFoundException());
+
+        if (userInterestRepository.findByUserIdAndProductId(userId, requestCreateInterestDto.getProductId()).isPresent()) {
+            throw new AlreadyInterestException();
+        } else {
+            Interest interest = Interest.builder()
+                    .user(user)
+                    .productId(requestCreateInterestDto.getProductId())
+                    .build();
+            userInterestRepository.save(interest);
+
+            return new ResponseIdDto(interest.getId());
+        }
+    }
+
+    public List<ResponseUserInterestDto> read(Long userId) {
+        List<Interest> interestList = userInterestRepository.findAllByUserId(userId);
+        if (interestList.isEmpty()) {
+            throw new InterestNotFoundException();
+        }
+
+        List<Long> productIdList = interestList.stream()
+                .map(Interest::getProductId)
+                .toList();
+
+        CircuitBreaker circuitBreaker = circuitBreakerFactory.create("interestReadCircuitBreaker");
+        List<ResponseSummarizedProductDto> responseSummarizedProductDtoList =
+                circuitBreaker.run(() -> productServiceClient.listByProductIds(new RequestProductIdListDto(productIdList)),
+                throwable -> new ArrayList<>());
+
+        List<ResponseUserInterestDto> result = new ArrayList<>();
+        for (Interest interest : interestList) {
+            for (ResponseSummarizedProductDto responseSummarizedProductDto : responseSummarizedProductDtoList) {
+                if (interest.getProductId().equals(responseSummarizedProductDto.getId())) {
+                    result.add(new ResponseUserInterestDto(interest.getId(), responseSummarizedProductDto));
+                    break;
+                }
+            }
+        }
+
+        return result;
+    }
+
+    @Transactional
+    public void delete(Long userId, Long interestId) {
+        Interest interest = userInterestRepository.findById(interestId).orElseThrow(InterestNotFoundException::new);
+
+        if (interest.getUser().getId().equals(userId)) {
+            userInterestRepository.deleteInterest(userId, interestId);
+        } else {
+            throw new UserNotFoundException();
+        }
+    }
+}
diff --git a/src/main/resources/errors.properties b/src/main/resources/errors.properties
index cb032d5..f9c783f 100644
--- a/src/main/resources/errors.properties
+++ b/src/main/resources/errors.properties
@@ -4,6 +4,7 @@ invalid.expired-token=\uB9CC\uB8CC\uB41C \uD1A0\uD070\uC785\uB2C8\uB2E4.
 notfound.access-token=\uC561\uC138\uC2A4 \uD1A0\uD070\uC744 \uCC3E\uC744 \uC218 \uC5C6\uC2B5\uB2C8\uB2E4.
 notfound.user=\uC720\uC800\uB97C \uCC3E\uC744 \uC218 \uC5C6\uC2B5\uB2C8\uB2E4.
 notfound.holding-product=\uD604\uC7AC \uD574\uB2F9 \uBCF4\uC720\uC911\uC778 \uC0C1\uD488\uC744 \uCC3E\uC744 \uC218 \uC5C6\uC2B5\uB2C8\uB2E4.
+notfound.interest-product=\uD604\uC7AC \uD574\uB2F9 \uAD00\uC2EC \uC0C1\uD488\uC744 \uCC3E\uC744 \uC218 \uC5C6\uC2B5\uB2C8\uB2E4.
 notfound.product=\uD574\uB2F9 \uC0C1\uD488\uC744 \uCC3E\uC744 \uC218 \uC5C6\uC2B5\uB2C8\uB2E4.
 
 unexpected=\uC608\uC0C1\uCE58 \uBABB\uD55C \uC624\uB958\uAC00 \uBC1C\uC0DD\uD588\uC2B5\uB2C8\uB2E4.
@@ -13,4 +14,5 @@ required.access-token=\uC561\uC138\uC2A4 \uD1A0\uD070\uC774 \uD544\uC694\uD55C \
 failed.oauth-callback-processing=OAuth \uCF5C\uBC31 \uC791\uC5C5\uC744 \uD558\uB294 \uB3C4\uC911 \uC624\uB958\uAC00 \uBC1C\uC0DD\uD588\uC2B5\uB2C8\uB2E4.
 failed.get-google-oauth-token=\uAD6C\uAE00\uB85C\uBD80\uD130 \uD1A0\uD070\uC744 \uBC1B\uB294\uB370 \uC2E4\uD328\uD588\uC2B5\uB2C8\uB2E4.
 
-already.nickname=\uC774\uBBF8 \uC0AC\uC6A9\uC911\uC778 \uB2C9\uB124\uC784\uC785\uB2C8\uB2E4.
\ No newline at end of file
+already.nickname=\uC774\uBBF8 \uC0AC\uC6A9\uC911\uC778 \uB2C9\uB124\uC784\uC785\uB2C8\uB2E4.
+already.interest=\uC774\uBBF8 \uB4F1\uB85D\uB41C \uAD00\uC2EC \uC0C1\uD488\uC785\uB2C8\uB2E4.
\ No newline at end of file
diff --git a/src/main/resources/errors_en_US.properties b/src/main/resources/errors_en_US.properties
index f490efe..09df49f 100644
--- a/src/main/resources/errors_en_US.properties
+++ b/src/main/resources/errors_en_US.properties
@@ -4,6 +4,7 @@ invalid.expired-token=Expired token.
 notfound.access-token=Cannot find access-token
 notfound.user=Cannot find that user.
 notfound.holding-product=Cannot find that currently holding product
+notfound.interest-product=Cannot find that currently interested product
 notfound.product=No such product was found.
 
 unexpected=An unexpected error occurred.
@@ -13,4 +14,5 @@ required.access-token=This request requires access-token.
 failed.oauth-callback-processing=Exception occurred during OAuth callback processing.
 failed.get-google-oauth-token=Failed to receive token from Google.
 
-already.nickname=The nickname is already in use.
\ No newline at end of file
+already.nickname=The nickname is already in use.
+already.interest=It's already registered as a product of interest.
\ No newline at end of file