diff --git a/inventory-backend/app/extensions.py b/inventory-backend/app/extensions.py
index 4e71948..4ee0efe 100644
--- a/inventory-backend/app/extensions.py
+++ b/inventory-backend/app/extensions.py
@@ -2,6 +2,7 @@ from flask_sqlalchemy import SQLAlchemy
 from flask_migrate import Migrate
 from flask_cors import CORS
 from flask_jwt_extended import JWTManager  # 确保引入了 JWTManager
+from datetime import datetime, timezone, timedelta
 
 # 1. 创建扩展实例（此时未绑定具体的 App）
 db = SQLAlchemy()
@@ -10,6 +11,11 @@ cors = CORS()
 jwt = JWTManager()  # 必须实例化
 
 
+def beijing_time():
+    """获取北京时间 (UTC+8)"""
+    return datetime.now(timezone(timedelta(hours=8)))
+
+
 # 2. 定义初始化函数 (供工厂函数 create_app 调用)
 def init_extensions(app):
     """
diff --git a/inventory-backend/app/models/audit.py b/inventory-backend/app/models/audit.py
index 6176542..b574f37 100644
--- a/inventory-backend/app/models/audit.py
+++ b/inventory-backend/app/models/audit.py
@@ -1,5 +1,5 @@
 # inventory-backend/app/models/audit.py
-from app.extensions import db
+from app.extensions import db, beijing_time
 from datetime import datetime
 
 
@@ -25,7 +25,7 @@ class AuditLog(db.Model):
     url = db.Column(db.String(500))  # 请求URL
     status_code = db.Column(db.Integer)  # 响应状态码
     error_message = db.Column(db.Text)  # 错误信息（如有）
-    created_at = db.Column(db.DateTime, default=datetime.now, index=True)  # 操作时间
+    created_at = db.Column(db.DateTime, default=beijing_time, index=True)  # 操作时间
 
     def to_dict(self):
         return {
diff --git a/inventory-backend/app/models/inbound/service.py b/inventory-backend/app/models/inbound/service.py
index 79b54ba..d59d2bb 100644
--- a/inventory-backend/app/models/inbound/service.py
+++ b/inventory-backend/app/models/inbound/service.py
@@ -1,5 +1,5 @@
 # inventory-backend/app/models/inbound/service.py
-from app.extensions import db
+from app.extensions import db, beijing_time
 from datetime import datetime
 
 
@@ -35,8 +35,8 @@ class StockService(db.Model):
     status = db.Column(db.String(20), default='active')
 
     # 时间与系统字段
-    created_at = db.Column(db.DateTime, default=datetime.now, nullable=False)
-    updated_at = db.Column(db.DateTime, default=datetime.now, onupdate=datetime.now)
+    created_at = db.Column(db.DateTime, default=beijing_time, nullable=False)
+    updated_at = db.Column(db.DateTime, default=beijing_time, onupdate=beijing_time)
     is_deleted = db.Column(db.Boolean, default=False)
 
     # ==========================================================================
diff --git a/inventory-backend/app/models/inbound/stocktake.py b/inventory-backend/app/models/inbound/stocktake.py
index feaf879..03c1864 100644
--- a/inventory-backend/app/models/inbound/stocktake.py
+++ b/inventory-backend/app/models/inbound/stocktake.py
@@ -1,4 +1,4 @@
-from app.extensions import db  # .material -> .base refactor checked
+from app.extensions import db, beijing_time  # .material -> .base refactor checked
 from datetime import datetime
 
 class StocktakeDraft(db.Model):
@@ -9,7 +9,7 @@ class StocktakeDraft(db.Model):
     uuid = db.Column(db.String(100))
     # ★ 新增 quantity 字段
     quantity = db.Column(db.Numeric(19, 4), default=1)
-    scan_time = db.Column(db.DateTime, default=datetime.now)
+    scan_time = db.Column(db.DateTime, default=beijing_time)
 
     def to_dict(self):
         return {
diff --git a/inventory-backend/app/models/outbound.py b/inventory-backend/app/models/outbound.py
index f9828a7..018d6ff 100644
--- a/inventory-backend/app/models/outbound.py
+++ b/inventory-backend/app/models/outbound.py
@@ -1,4 +1,4 @@
-from app.extensions import db
+from app.extensions import db, beijing_time
 from datetime import datetime
 
 
@@ -25,7 +25,7 @@ class TransOutbound(db.Model):
     # 签字与追溯
     consumer_name = db.Column(db.String(100))  # 领用人/客户
     signature_path = db.Column(db.Text)  # 电子签名图片路径
-    outbound_time = db.Column(db.DateTime, default=datetime.now)
+    outbound_time = db.Column(db.DateTime, default=beijing_time)
     operator_name = db.Column(db.String(100))  # 操作员
 
     remark = db.Column(db.Text)
diff --git a/inventory-backend/app/models/system.py b/inventory-backend/app/models/system.py
index 3daa395..d1901e8 100644
--- a/inventory-backend/app/models/system.py
+++ b/inventory-backend/app/models/system.py
@@ -1,5 +1,5 @@
 # inventory-backend/app/models/system.py
-from app.extensions import db
+from app.extensions import db, beijing_time
 from werkzeug.security import generate_password_hash, check_password_hash
 from datetime import datetime
 
@@ -22,7 +22,7 @@ class SysUser(db.Model):
     role = db.Column(db.String(50))
     status = db.Column(db.String(20), default='active')
     password_hash = db.Column(db.Text)
-    created_at = db.Column(db.DateTime, default=datetime.now)
+    created_at = db.Column(db.DateTime, default=beijing_time)
 
     def set_password(self, password):
         """生成加密密码"""
@@ -76,7 +76,7 @@ class SysLog(db.Model):
     __tablename__ = 'sys_log'
 
     id = db.Column(db.Integer, primary_key=True)
-    op_time = db.Column(db.DateTime, default=datetime.now)
+    op_time = db.Column(db.DateTime, default=beijing_time)
     op_user_name = db.Column(db.String(100))
     op_user_id = db.Column(db.String(50))
     module_name = db.Column(db.String(100))
@@ -167,7 +167,7 @@ class SysWarehouseLocation(db.Model):
     full_path = db.Column(db.String(500))  # 完整路径，如 "A区/货架1/第3层"
     level = db.Column(db.Integer, default=0)  # 层级深度，顶级为0
     is_enabled = db.Column(db.Boolean, default=True)
-    created_at = db.Column(db.DateTime, default=datetime.now)
+    created_at = db.Column(db.DateTime, default=beijing_time)
     # 注意：数据库表中没有 updated_at 字段，不要添加！
 
     # 自关联 - 使用 backref 定义父节点的反向引用
diff --git a/inventory-backend/app/models/transaction.py b/inventory-backend/app/models/transaction.py
index 32393fd..8bce544 100644
--- a/inventory-backend/app/models/transaction.py
+++ b/inventory-backend/app/models/transaction.py
@@ -1,4 +1,4 @@
-from app.extensions import db
+from app.extensions import db, beijing_time
 from datetime import datetime
 from sqlalchemy import func
 
@@ -14,7 +14,7 @@ class TransBorrow(db.Model):
     barcode = db.Column(db.String(100))
     quantity = db.Column(db.Numeric(19, 4))
     borrower_name = db.Column(db.String(100))
-    borrow_time = db.Column(db.DateTime, default=datetime.now)
+    borrow_time = db.Column(db.DateTime, default=beijing_time)
     borrow_signature = db.Column(db.Text)
     expected_return_time = db.Column(db.DateTime)
     is_returned = db.Column(db.Boolean, default=False)
@@ -110,7 +110,7 @@ class TransScrap(db.Model):
     quantity = db.Column(db.Numeric(19, 4))
     reason = db.Column(db.Text)
     operator_name = db.Column(db.String(100))
-    operation_time = db.Column(db.DateTime, default=datetime.now)
+    operation_time = db.Column(db.DateTime, default=beijing_time)
     approver_name = db.Column(db.String(100))
     approval_status = db.Column(db.String(20), default='pending')
     cost_at_scrap = db.Column(db.Numeric(19, 4))
diff --git a/inventory-web/src/views/system/AuditLog.vue b/inventory-web/src/views/system/AuditLog.vue
index 3b43eca..49812a5 100644
--- a/inventory-web/src/views/system/AuditLog.vue
+++ b/inventory-web/src/views/system/AuditLog.vue
@@ -53,7 +53,7 @@
             <el-tag>{{ scope.row.module }}</el-tag>
           </template>
         </el-table-column>
-        <el-table-column prop="action" label="操作" width="100">
+        <el-table-column prop="action" label="操作类型" width="100">
           <template #default="scope">
             <el-tag :type="getActionType(scope.row.action)">{{ scope.row.action }}</el-tag>
           </template>
@@ -63,10 +63,10 @@
         <el-table-column prop="created_at" label="操作时间" width="170" />
         <el-table-column label="操作" width="120" fixed="right">
           <template #default="scope">
-            <el-button v-if="scope.row.details" link type="primary" size="small" @click="handleViewDetails(scope.row)">
-              详情
+            <el-button v-if="scope.row.details && Object.keys(scope.row.details).length > 0" link type="primary" size="small" @click="handleViewDetails(scope.row)">
+              查看详情
             </el-button>
-            <span v-else class="text-gray">-</span>
+            <span v-else style="color: #909399; font-size: 12px;">无变更明细</span>
           </template>
         </el-table-column>
       </el-table>