diff --git a/34th-Sopt-Seminar/Week4/Model/SignUpRequestModel.swift b/34th-Sopt-Seminar/Week4/Model/SignUpRequestModel.swift
index 0c58521..9b91a26 100644
--- a/34th-Sopt-Seminar/Week4/Model/SignUpRequestModel.swift
+++ b/34th-Sopt-Seminar/Week4/Model/SignUpRequestModel.swift
@@ -6,3 +6,10 @@
 //
 
 import Foundation
+
+struct SignUpRequestModel: Codable {
+    let authenticationId: String
+    let password: String
+    let nickname: String
+    let phone: String
+}
diff --git a/34th-Sopt-Seminar/Week4/Model/SignUpResponseModel.swift b/34th-Sopt-Seminar/Week4/Model/SignUpResponseModel.swift
index 14e0f1d..3f23d51 100644
--- a/34th-Sopt-Seminar/Week4/Model/SignUpResponseModel.swift
+++ b/34th-Sopt-Seminar/Week4/Model/SignUpResponseModel.swift
@@ -6,3 +6,8 @@
 //
 
 import Foundation
+
+struct SignUpResponseModel: Codable {
+    let code: Int
+    let message: String
+}
diff --git a/34th-Sopt-Seminar/Week4/Model/UserInfoResponseModel.swift b/34th-Sopt-Seminar/Week4/Model/UserInfoResponseModel.swift
index f2e47d2..7d95e68 100644
--- a/34th-Sopt-Seminar/Week4/Model/UserInfoResponseModel.swift
+++ b/34th-Sopt-Seminar/Week4/Model/UserInfoResponseModel.swift
@@ -6,3 +6,15 @@
 //
 
 import Foundation
+
+// MARK: - UserInfoResponseModel
+struct UserInfoResponseModel: Codable {
+    let code: Int
+    let message: String
+    let data: DataClass
+}
+
+// MARK: - DataClass
+struct DataClass: Codable {
+    let authenticationId, nickname, phone: String
+}