diff --git a/app/db/__init__.py b/app/db/__init__.py
index 0e70c417..ba644eec 100644
--- a/app/db/__init__.py
+++ b/app/db/__init__.py
@@ -160,8 +160,6 @@ class Base:
     def update(self, db: Session, payload: dict):
         payload = {k: v for k, v in payload.items() if v is not None}
         for key, value in payload.items():
-            if ObjectUtils.is_obj(value):
-                value = json.dumps(value)
             setattr(self, key, value)
         if inspect(self).detached:
             db.add(self)
diff --git a/app/db/models/plugindata.py b/app/db/models/plugindata.py
index 0dc01ffc..cf02156f 100644
--- a/app/db/models/plugindata.py
+++ b/app/db/models/plugindata.py
@@ -1,4 +1,4 @@
-from sqlalchemy import Column, Integer, String, Sequence
+from sqlalchemy import Column, Integer, String, Sequence, JSON
 from sqlalchemy.orm import Session
 
 from app.db import db_query, db_update, Base
@@ -11,7 +11,7 @@ class PluginData(Base):
     id = Column(Integer, Sequence('id'), primary_key=True, index=True)
     plugin_id = Column(String, nullable=False, index=True)
     key = Column(String, index=True, nullable=False)
-    value = Column(String)
+    value = Column(JSON)
 
     @staticmethod
     @db_query
diff --git a/app/db/models/sitestatistic.py b/app/db/models/sitestatistic.py
index a8983f71..fec0fd19 100644
--- a/app/db/models/sitestatistic.py
+++ b/app/db/models/sitestatistic.py
@@ -1,6 +1,6 @@
 from datetime import datetime
 
-from sqlalchemy import Column, Integer, String, Sequence
+from sqlalchemy import Column, Integer, String, Sequence, JSON
 from sqlalchemy.orm import Session
 
 from app.db import db_query, db_update, Base
@@ -24,7 +24,7 @@ class SiteStatistic(Base):
     # 最后访问时间
     lst_mod_date = Column(String, default=datetime.now().strftime("%Y-%m-%d %H:%M:%S"))
     # 耗时记录 Json
-    note = Column(String)
+    note = Column(JSON)
 
     @staticmethod
     @db_query
diff --git a/app/db/models/siteuserdata.py b/app/db/models/siteuserdata.py
index ce23a970..749e97fb 100644
--- a/app/db/models/siteuserdata.py
+++ b/app/db/models/siteuserdata.py
@@ -1,6 +1,6 @@
 from datetime import datetime
 
-from sqlalchemy import Column, Integer, String, Sequence, Float
+from sqlalchemy import Column, Integer, String, Sequence, Float, JSON
 from sqlalchemy.orm import Session
 
 from app.db import db_query, Base
@@ -38,11 +38,11 @@ class SiteUserData(Base):
     # 下载体积
     leeching_size = Column(Float, default=0)
     # 做种人数, 种子大小 JSON
-    seeding_info = Column(String)
+    seeding_info = Column(JSON)
     # 未读消息
     message_unread = Column(Integer, default=0)
     # 未读消息内容 JSON
-    message_unread_contents = Column(String)
+    message_unread_contents = Column(JSON)
     # 错误信息
     err_msg = Column(String)
     # 更新日期
diff --git a/app/db/models/systemconfig.py b/app/db/models/systemconfig.py
index d26b9aee..dd976446 100644
--- a/app/db/models/systemconfig.py
+++ b/app/db/models/systemconfig.py
@@ -1,4 +1,4 @@
-from sqlalchemy import Column, Integer, String, Sequence
+from sqlalchemy import Column, Integer, String, Sequence, JSON
 from sqlalchemy.orm import Session
 
 from app.db import db_query, db_update, Base
@@ -12,7 +12,7 @@ class SystemConfig(Base):
     # 主键
     key = Column(String, index=True)
     # 值
-    value = Column(String, nullable=True)
+    value = Column(JSON, nullable=True)
 
     @staticmethod
     @db_query
diff --git a/app/db/models/user.py b/app/db/models/user.py
index 39332f1c..6440fdbd 100644
--- a/app/db/models/user.py
+++ b/app/db/models/user.py
@@ -1,6 +1,6 @@
 from typing import Tuple, Any
 
-from sqlalchemy import Boolean, Column, Integer, String, Sequence
+from sqlalchemy import Boolean, Column, Integer, String, Sequence, JSON
 from sqlalchemy.orm import Session
 
 from app.core.security import verify_password
@@ -31,9 +31,9 @@ class User(Base):
     # otp秘钥
     otp_secret = Column(String, default=None)
     # 用户权限 json
-    permissions = Column(String, default='')
+    permissions = Column(JSON, default='')
     # 用户个性化设置 json
-    settings = Column(String, default='')
+    settings = Column(JSON, default='')
 
     @staticmethod
     @db_query
diff --git a/app/db/models/userconfig.py b/app/db/models/userconfig.py
index fce73578..3dab7d33 100644
--- a/app/db/models/userconfig.py
+++ b/app/db/models/userconfig.py
@@ -1,4 +1,4 @@
-from sqlalchemy import Column, Integer, String, Sequence, UniqueConstraint, Index
+from sqlalchemy import Column, Integer, String, Sequence, UniqueConstraint, Index, JSON
 from sqlalchemy.orm import Session
 
 from app.db import db_query, db_update, Base
@@ -14,7 +14,7 @@ class UserConfig(Base):
     # 配置键
     key = Column(String)
     # 值
-    value = Column(String, nullable=True)
+    value = Column(JSON, nullable=True)
 
     __table_args__ = (
         # 用户名和配置键联合唯一
diff --git a/app/db/plugindata_oper.py b/app/db/plugindata_oper.py
index 6f271b42..18bae943 100644
--- a/app/db/plugindata_oper.py
+++ b/app/db/plugindata_oper.py
@@ -36,8 +36,6 @@ class PluginDataOper(DbOper):
             data = PluginData.get_plugin_data_by_key(self._db, plugin_id, key)
             if not data:
                 return None
-            if ObjectUtils.is_objstr(data.value):
-                return json.loads(data.value)
             return data.value
         else:
             return PluginData.get_plugin_data(self._db, plugin_id)
diff --git a/app/db/site_oper.py b/app/db/site_oper.py
index 7956e65d..4db3352c 100644
--- a/app/db/site_oper.py
+++ b/app/db/site_oper.py
@@ -7,7 +7,6 @@ from app.db.models import SiteIcon
 from app.db.models.site import Site
 from app.db.models.sitestatistic import SiteStatistic
 from app.db.models.siteuserdata import SiteUserData
-from app.utils.object import ObjectUtils
 
 
 class SiteOper(DbOper):
@@ -125,9 +124,7 @@ class SiteOper(DbOper):
         else:
             # 不存在则插入
             for key, value in payload.items():
-                if ObjectUtils.is_obj(value):
-                    payload[key] = json.dumps(value)
-            SiteUserData(**payload).create(self._db)
+                SiteUserData(**payload).create(self._db)
         return True, "更新站点用户数据成功"
 
     def get_userdata_by_domain(self, domain: str, workdate: str = None) -> List[SiteUserData]:
@@ -153,7 +150,7 @@ class SiteOper(DbOper):
         更新站点图标
         """
         icon_base64 = f"data:image/ico;base64,{icon_base64}" if icon_base64 else ""
-        siteicon = self.get_by_domain(domain)
+        siteicon = self.get_icon_by_domain(domain)
         if not siteicon:
             SiteIcon(name=name, domain=domain, url=icon_url, base64=icon_base64).create(self._db)
         elif icon_base64:
@@ -172,7 +169,7 @@ class SiteOper(DbOper):
         if sta:
             avg_seconds, note = None, {}
             if seconds is not None:
-                note: dict = json.loads(sta.note or "{}")
+                note: dict = sta.note or {}
                 note[lst_date] = seconds or 1
                 avg_times = len(note.keys())
                 if avg_times > 10:
diff --git a/app/db/systemconfig_oper.py b/app/db/systemconfig_oper.py
index a7665f2e..73324d13 100644
--- a/app/db/systemconfig_oper.py
+++ b/app/db/systemconfig_oper.py
@@ -18,10 +18,7 @@ class SystemConfigOper(DbOper, metaclass=Singleton):
         """
         super().__init__()
         for item in SystemConfig.list(self._db):
-            if ObjectUtils.is_objstr(item.value):
-                self.__SYSTEMCONF[item.key] = json.loads(item.value)
-            else:
-                self.__SYSTEMCONF[item.key] = item.value
+            self.__SYSTEMCONF[item.key] = item.value
 
     def set(self, key: Union[str, SystemConfigKey], value: Any):
         """
@@ -38,10 +35,6 @@ class SystemConfigOper(DbOper, metaclass=Singleton):
             else:
                 conf.delete(self._db, conf.id)
         else:
-            if ObjectUtils.is_obj(value):
-                value = json.dumps(value)
-            elif value is None:
-                value = ''
             conf = SystemConfig(key=key, value=value)
             conf.create(self._db)
 
diff --git a/app/db/userconfig_oper.py b/app/db/userconfig_oper.py
index 520bad8e..fcd747ea 100644
--- a/app/db/userconfig_oper.py
+++ b/app/db/userconfig_oper.py
@@ -18,8 +18,7 @@ class UserConfigOper(DbOper, metaclass=Singleton):
         """
         super().__init__()
         for item in UserConfig.list(self._db):
-            value = json.loads(item.value) if ObjectUtils.is_objstr(item.value) else item.value
-            self.__set_config_cache(username=item.username, key=item.key, value=value)
+            self.__set_config_cache(username=item.username, key=item.key, value=item.value)
 
     def set(self, username: str, key: Union[str, UserConfigKey], value: Any):
         """
@@ -30,10 +29,6 @@ class UserConfigOper(DbOper, metaclass=Singleton):
         # 更新内存
         self.__set_config_cache(username=username, key=key, value=value)
         # 写入数据库
-        if ObjectUtils.is_obj(value):
-            value = json.dumps(value)
-        elif value is None:
-            value = ''
         conf = UserConfig.get_by_key(db=self._db, username=username, key=key)
         if conf:
             if value:
diff --git a/app/schemas/site.py b/app/schemas/site.py
index 1fe73f38..09d90257 100644
--- a/app/schemas/site.py
+++ b/app/schemas/site.py
@@ -63,7 +63,7 @@ class SiteStatistic(BaseModel):
     # 最后修改时间
     lst_mod_date: Optional[str]
     # 备注
-    note: Optional[str] = None
+    note: Optional[dict] = None
 
     class Config:
         orm_mode = True