diff --git a/src/utils/business/format.ts b/src/utils/business/format.ts
index 4d3ce55..e289329 100644
--- a/src/utils/business/format.ts
+++ b/src/utils/business/format.ts
@@ -187,12 +187,13 @@ export function formatDateTime(
 
   if (isNaN(d.getTime())) return '-'
 
-  const year = d.getFullYear()
-  const month = String(d.getMonth() + 1).padStart(2, '0')
-  const day = String(d.getDate()).padStart(2, '0')
-  const hours = String(d.getHours()).padStart(2, '0')
-  const minutes = String(d.getMinutes()).padStart(2, '0')
-  const seconds = String(d.getSeconds()).padStart(2, '0')
+  // 使用 UTC 方法获取时间
+  const year = d.getUTCFullYear()
+  const month = String(d.getUTCMonth() + 1).padStart(2, '0')
+  const day = String(d.getUTCDate()).padStart(2, '0')
+  const hours = String(d.getUTCHours()).padStart(2, '0')
+  const minutes = String(d.getUTCMinutes()).padStart(2, '0')
+  const seconds = String(d.getUTCSeconds()).padStart(2, '0')
 
   return format
     .replace('YYYY', String(year))
@@ -203,6 +204,7 @@ export function formatDateTime(
     .replace('ss', seconds)
 }
 
+
 /**
  * 格式化费率（基点 -> 百分比）
  * @param basisPoints 费率基点（100基点=1%）
diff --git a/src/views/account-management/account/index.vue b/src/views/account-management/account/index.vue
index 0366d6d..9bbae77 100644
--- a/src/views/account-management/account/index.vue
+++ b/src/views/account-management/account/index.vue
@@ -772,15 +772,7 @@
 
   // 表单验证规则
   const rules = reactive<FormRules>({
-    username: [
-      { required: true, message: '请输入账号名称', trigger: 'blur' },
-      { min: 2, max: 50, message: '长度在 2 到 50 个字符', trigger: 'blur' },
-      {
-        pattern: /^[a-zA-Z0-9_-]+$/,
-        message: '用户名只能包含字母、数字、下划线和横线',
-        trigger: 'blur'
-      }
-    ],
+    username: [{ required: true, message: '请输入账号名称', trigger: 'blur' }],
     password: [
       { required: true, message: '请输入密码', trigger: 'blur' },
       { min: 8, max: 32, message: '密码长度为 8-32 个字符', trigger: 'blur' }
diff --git a/src/views/common/account-list.vue b/src/views/common/account-list.vue
index 86402cc..ba90531 100644
--- a/src/views/common/account-list.vue
+++ b/src/views/common/account-list.vue
@@ -540,15 +540,7 @@
 
   // 表单验证规则
   const accountRules = reactive<FormRules>({
-    username: [
-      { required: true, message: '请输入用户名', trigger: 'blur' },
-      { min: 2, max: 50, message: '长度在 2 到 50 个字符', trigger: 'blur' },
-      {
-        pattern: /^[a-zA-Z0-9_-]+$/,
-        message: '用户名只能包含字母、数字、下划线和横线',
-        trigger: 'blur'
-      }
-    ],
+    username: [{ required: true, message: '请输入用户名', trigger: 'blur' }],
     password: [
       { required: true, message: '请输入密码', trigger: 'blur' },
       { min: 6, max: 20, message: '密码长度为 6-20 个字符', trigger: 'blur' }