diff --git a/backend/application/settings.py b/backend/application/settings.py
index bb5505c..0b78fca 100644
--- a/backend/application/settings.py
+++ b/backend/application/settings.py
@@ -364,3 +364,6 @@ REGISTER_PLUGINS = (
 # 初始化需要执行的列表，用来初始化后执行
 INITIALIZE_LIST = []
 INITIALIZE_RESET_LIST = []
+# 表前缀
+TABLE_PREFIX = getattr(locals(), "TABLE_PREFIX", "dvadmin_")
+DEFAULT_PASSWORD = getattr(locals(), "DEFAULT_PASSWORD", "admin123456")
diff --git a/backend/conf/env.example.py b/backend/conf/env.example.py
index 00efd97..a764d35 100644
--- a/backend/conf/env.example.py
+++ b/backend/conf/env.example.py
@@ -24,7 +24,7 @@ DATABASE_USER = "root"
 DATABASE_PASSWORD = "123456"
 
 # 表前缀
-TABLE_PREFIX = "sys_"
+TABLE_PREFIX = "dvadmin_"
 # ================================================= #
 # ******** redis配置，无redis 可不进行配置  ******** #
 # ================================================= #
@@ -37,8 +37,8 @@ TABLE_PREFIX = "sys_"
 DEBUG = False
 # 启动登录详细概略获取(通过调用api获取ip详细地址。如果是内网，关闭即可)
 ENABLE_LOGIN_ANALYSIS_LOG = True
-# 是否启用登录验证码，不需要可以设置为False
-CAPTCHA_STATE = False
+# 是否启用登录验证码，不需要可以设置为False，线上环境建议开启
+CAPTCHA_STATE = True
 # 登录接口 /api/token/ 是否需要验证码认证，用于测试，正式环境建议取消
 LOGIN_NO_CAPTCHA_AUTH = True
 # ================================================= #
diff --git a/web/public/image/theme/chester/preview@2x.jpg b/web/public/image/theme/chester/preview@2x.jpg
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diff --git a/web/public/image/theme/element/preview@2x.jpg b/web/public/image/theme/element/preview@2x.jpg
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index 0000000..8e68ab6
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diff --git a/web/public/image/theme/line/preview@2x.jpg b/web/public/image/theme/line/preview@2x.jpg
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index 0000000..a9ed0cf
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diff --git a/web/public/image/theme/star/preview@2x.jpg b/web/public/image/theme/star/preview@2x.jpg
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index 0000000..07a8e6e
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diff --git a/web/public/image/theme/tomorrow-night-blue/preview@2x.jpg b/web/public/image/theme/tomorrow-night-blue/preview@2x.jpg
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index 0000000..8dc1439
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diff --git a/web/public/image/theme/violet/preview@2x.jpg b/web/public/image/theme/violet/preview@2x.jpg
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index 0000000..f8e08fa
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diff --git a/web/src/views/system/user/crud.js b/web/src/views/system/user/crud.js
index dc4def8..3444d46 100644
--- a/web/src/views/system/user/crud.js
+++ b/web/src/views/system/user/crud.js
@@ -13,7 +13,7 @@ export const crudOptions = (vm) => {
       rowKey: true // 必须设置，true or false
     },
     rowHandle: {
-      width: 320,
+      width: 230,
       fixed: 'right',
       view: {
         thin: true,
@@ -211,7 +211,7 @@ export const crudOptions = (vm) => {
       }, {
         title: '邮箱',
         key: 'email',
-        minWidth: 160,
+        minWidth: 180,
         form: {
           rules: [
             { type: 'email', message: '请输入正确的邮箱地址', trigger: ['blur', 'change'] }