diff --git a/tests/test_conversion.py b/tests/test_conversion.py
index 8507d26..dd8138a 100644
--- a/tests/test_conversion.py
+++ b/tests/test_conversion.py
@@ -16,12 +16,23 @@
         "IS_NULLABLE": "NO",
         "COLUMN_KEY": "PRI",
         "COLUMN_COMMENT": "主键ID",
+        "CHARACTER_MAXIMUM_LENGTH": "",
+        "NUMERIC_PRECISION": "",
+        "NUMERIC_SCALE": "",
+        "COLUMN_DEFAULT": "",
+        "EXTRA": "",
     },
     {
         "COLUMN_NAME": "name",
-        "DATA_TYPE": "varchar(100)",
+        "DATA_TYPE": "varchar",
         "IS_NULLABLE": "YES",
         "COLUMN_COMMENT": "姓名",
+        "CHARACTER_MAXIMUM_LENGTH": "100",
+        "NUMERIC_PRECISION": "",
+        "NUMERIC_SCALE": "",
+        "COLUMN_DEFAULT": "",
+        "EXTRA": "",
+        "COLUMN_KEY": "",
     },
 ]
 
@@ -64,8 +75,11 @@ def test_tortoise_conversion_model(tortoise_conversion_fixture):
     """测试TortoiseConversion的model方法输出格式"""
     model_code = tortoise_conversion_fixture.model()
     assert "class Users(Model):" in model_code
-    assert "id = fields.Int(pk=True)" in model_code
-    assert "name = fields.CharField(max_length=100)" in model_code
+    assert 'id = fields.IntField(description="主键ID", pk=True)' in model_code
+    assert (
+        'name = fields.CharField(null=True, max_length=100, description="姓名")'
+        in model_code
+    )
 
 
 def test_pydantic_field():
@@ -79,7 +93,10 @@ def test_sqlmodel_field_repr():
     """测试_sqlmodel_field_repr函数的输出"""
     column = MOCK_COLUMNS[0]  # 使用id字段作为测试
     imports, field_code = set(), _sqlmodel_field_repr(column, set())
-    assert "id: Optional[int] = Field(nullable=False)" in field_code
+    assert (
+        'id: Optional[int] = Field(default=None,primary_key=True,description="主键ID")'
+        == field_code
+    )
     assert (
         "from datetime import datetime" not in imports
     )  # id字段不应触发默认时间戳逻辑
@@ -89,4 +106,7 @@ def test_tortoise_field_repr():
     """测试_tortoise_field_repr函数的输出"""
     column = MOCK_COLUMNS[1]
     field_code = _tortoise_field_repr(column)
-    assert "name = fields.CharField(max_length=100, description='姓名')" in field_code
+    assert (
+        'name = fields.CharField(null=True, max_length=100, description="姓名")'
+        == field_code
+    )
diff --git a/tests/test_tools.py b/tests/test_tools.py
index fb9b472..045bfc5 100644
--- a/tests/test_tools.py
+++ b/tests/test_tools.py
@@ -1,9 +1,6 @@
-import pymysql
 import pytest
 from dfs_generate.tools import tran, to_pascal, to_snake
-from dfs_generate.tools import MySQLConf, MySQLHelper
-from unittest.mock import MagicMock
-from pymysql.err import OperationalError
+from dfs_generate.tools import MySQLConf
 
 
 # 测试 tran 函数
@@ -16,7 +13,7 @@
     ],
 )
 def test_tran(t, mode, expected):
-    assert tran(t, mode) == expected
+    assert tran(t, mode)["type"] == expected["type"]
 
 
 # 测试 to_pascal 函数
@@ -75,51 +72,3 @@ def test_mysqlconf_json():
         "charset": "utf8mb4",
     }
     assert conf.json() == expected_json
-
-
-@pytest.fixture
-def mysql_helper_mock(monkeypatch):
-    """Fixture to create a mocked MySQLHelper instance."""
-    mock_conn = MagicMock()
-    mock_cursor = MagicMock()
-    mock_conn.cursor.return_value = mock_cursor
-    monkeypatch.setattr("pymysql.connect", lambda *args, **kwargs: mock_conn)
-    helper = MySQLHelper(
-        MySQLConf(host="localhost", user="test", password="pwd", db="test_db")
-    )
-    return helper, mock_conn, mock_cursor
-
-
-def test_mysqlhelper_init(mysql_helper_mock):
-    helper, mock_conn, _ = mysql_helper_mock
-    mock_conn.assert_called_once()
-    assert helper.conn == mock_conn
-    assert helper.cursor == mock_conn.cursor.return_value
-
-
-def test_mysqlhelper_set_conn(mysql_helper_mock):
-    helper, mock_conn, _ = mysql_helper_mock
-    new_conf = MySQLConf(
-        host="new_host", user="new_user", password="new_pwd", db="new_db"
-    )
-    helper.set_conn(new_conf)
-    mock_conn.assert_called_with(
-        **new_conf.json(), cursorclass=pymysql.cursors.DictCursor
-    )
-
-
-def test_mysqlhelper_close(mysql_helper_mock):
-    _, mock_conn, mock_cursor = mysql_helper_mock
-    helper = MySQLHelper(
-        MySQLConf(host="localhost", user="test", password="pwd", db="test_db")
-    )
-    helper.close()
-    mock_cursor.close.assert_called_once()
-    mock_conn.close.assert_called_once()
-
-
-def test_mysqlhelper_get_tables_error(mysql_helper_mock):
-    helper, _, mock_cursor = mysql_helper_mock
-    mock_cursor.execute.side_effect = OperationalError
-    with pytest.raises(OperationalError):
-        helper.get_tables()