diff --git a/application/admin/command/Install.php b/application/admin/command/Install.php
index 499f8c4..835269d 100644
--- a/application/admin/command/Install.php
+++ b/application/admin/command/Install.php
@@ -172,7 +172,7 @@ class Install extends Command
         try {
             $pdo = new PDO("{$config['type']}:host={$mysqlHostname}" . ($mysqlHostport ? ";port={$mysqlHostport}" : ''), $mysqlUsername, $mysqlPassword);
             $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
-            $pdo->query("CREATE DATABASE IF NOT EXISTS `{$mysqlDatabase}` CHARACTER SET utf8 COLLATE utf8_general_ci;");
+            $pdo->query("CREATE DATABASE IF NOT EXISTS `{$mysqlDatabase}` CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;");
 
             // 连接install命令中指定的数据库
             $instance = Db::connect([
diff --git a/application/admin/command/Install/fastadmin.sql b/application/admin/command/Install/fastadmin.sql
index 97b36f4..a124e1f 100755
--- a/application/admin/command/Install/fastadmin.sql
+++ b/application/admin/command/Install/fastadmin.sql
@@ -1,6 +1,6 @@
 /*
  FastAdmin Install SQL
- Date: 2018年05月26日
+ Date: 2020年04月23日
 */
 
 SET FOREIGN_KEY_CHECKS = 0;
@@ -26,7 +26,7 @@ CREATE TABLE `fa_admin` (
   `status` varchar(30) NOT NULL DEFAULT 'normal' COMMENT '状态',
   PRIMARY KEY (`id`),
   UNIQUE KEY `username` (`username`) USING BTREE
-) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8 COMMENT='管理员表';
+) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8mb4 COLLATE utf8mb4_unicode_ci COMMENT='管理员表';
 
 -- ----------------------------
 -- Records of fa_admin
@@ -51,7 +51,7 @@ CREATE TABLE `fa_admin_log` (
   `createtime` int(10) DEFAULT NULL COMMENT '操作时间',
   PRIMARY KEY (`id`),
   KEY `name` (`username`)
-) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8 COMMENT='管理员日志表';
+) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8mb4 COLLATE utf8mb4_unicode_ci COMMENT='管理员日志表';
 
 -- ----------------------------
 -- Table structure for fa_attachment
@@ -75,7 +75,7 @@ CREATE TABLE `fa_attachment` (
   `storage` varchar(100) NOT NULL DEFAULT 'local' COMMENT '存储位置',
   `sha1` varchar(40) NOT NULL DEFAULT '' COMMENT '文件 sha1编码',
   PRIMARY KEY (`id`)
-) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8 COMMENT='附件表';
+) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8mb4 COLLATE utf8mb4_unicode_ci COMMENT='附件表';
 
 -- ----------------------------
 -- Records of fa_attachment
@@ -97,7 +97,7 @@ CREATE TABLE `fa_auth_group` (
   `updatetime` int(10) DEFAULT NULL COMMENT '更新时间',
   `status` varchar(30) NOT NULL DEFAULT '' COMMENT '状态',
   PRIMARY KEY (`id`)
-) ENGINE=InnoDB AUTO_INCREMENT=6 DEFAULT CHARSET=utf8 COMMENT='分组表';
+) ENGINE=InnoDB AUTO_INCREMENT=6 DEFAULT CHARSET=utf8mb4 COMMENT='分组表';
 
 -- ----------------------------
 -- Records of fa_auth_group
@@ -120,7 +120,7 @@ CREATE TABLE `fa_auth_group_access` (
   UNIQUE KEY `uid_group_id` (`uid`,`group_id`),
   KEY `uid` (`uid`),
   KEY `group_id` (`group_id`)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='权限分组表';
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE utf8mb4_unicode_ci COMMENT='权限分组表';
 
 -- ----------------------------
 -- Records of fa_auth_group_access
@@ -151,7 +151,7 @@ CREATE TABLE `fa_auth_rule` (
   UNIQUE KEY `name` (`name`) USING BTREE,
   KEY `pid` (`pid`),
   KEY `weigh` (`weigh`)
-) ENGINE=InnoDB AUTO_INCREMENT=66 DEFAULT CHARSET=utf8 COMMENT='节点表';
+) ENGINE=InnoDB AUTO_INCREMENT=66 DEFAULT CHARSET=utf8mb4 COLLATE utf8mb4_unicode_ci COMMENT='节点表';
 
 -- ----------------------------
 -- Records of fa_auth_rule
@@ -263,7 +263,7 @@ CREATE TABLE `fa_category` (
   PRIMARY KEY (`id`),
   KEY `weigh` (`weigh`,`id`),
   KEY `pid` (`pid`)
-) ENGINE=InnoDB AUTO_INCREMENT=14 DEFAULT CHARSET=utf8 COMMENT='分类表';
+) ENGINE=InnoDB AUTO_INCREMENT=14 DEFAULT CHARSET=utf8mb4 COLLATE utf8mb4_unicode_ci COMMENT='分类表';
 
 -- ----------------------------
 -- Records of fa_category
@@ -301,7 +301,7 @@ CREATE TABLE `fa_config` (
   `extend` varchar(255) NOT NULL DEFAULT '' COMMENT '扩展属性',
   PRIMARY KEY (`id`),
   UNIQUE KEY `name` (`name`)
-) ENGINE=InnoDB AUTO_INCREMENT=18 DEFAULT CHARSET=utf8 COMMENT='系统配置';
+) ENGINE=InnoDB AUTO_INCREMENT=18 DEFAULT CHARSET=utf8mb4 COLLATE utf8mb4_unicode_ci COMMENT='系统配置';
 
 -- ----------------------------
 -- Records of fa_config
@@ -332,14 +332,14 @@ COMMIT;
 DROP TABLE IF EXISTS `fa_ems`;
 CREATE TABLE `fa_ems`  (
   `id` int(10) UNSIGNED NOT NULL AUTO_INCREMENT COMMENT 'ID',
-  `event` varchar(30) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL DEFAULT '' COMMENT '事件',
-  `email` varchar(100) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL DEFAULT '' COMMENT '邮箱',
-  `code` varchar(10) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL DEFAULT '' COMMENT '验证码',
+  `event` varchar(30) NOT NULL DEFAULT '' COMMENT '事件',
+  `email` varchar(100) NOT NULL DEFAULT '' COMMENT '邮箱',
+  `code` varchar(10) NOT NULL DEFAULT '' COMMENT '验证码',
   `times` int(10) UNSIGNED NOT NULL DEFAULT 0 COMMENT '验证次数',
-  `ip` varchar(30) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL DEFAULT '' COMMENT 'IP',
+  `ip` varchar(30) NOT NULL DEFAULT '' COMMENT 'IP',
   `createtime` int(10) UNSIGNED NULL DEFAULT 0 COMMENT '创建时间',
   PRIMARY KEY (`id`) USING BTREE
-) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8 COMMENT='邮箱验证码表';
+) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8mb4 COLLATE utf8mb4_unicode_ci COMMENT='邮箱验证码表';
 
 -- ----------------------------
 -- Table structure for fa_sms
@@ -354,7 +354,7 @@ CREATE TABLE `fa_sms` (
   `ip` varchar(30) NOT NULL DEFAULT '' COMMENT 'IP',
   `createtime` int(10) unsigned DEFAULT '0' COMMENT '创建时间',
   PRIMARY KEY (`id`)
-) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8 COMMENT='短信验证码表';
+) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8mb4 COLLATE utf8mb4_unicode_ci COMMENT='短信验证码表';
 
 -- ----------------------------
 -- Table structure for fa_test
@@ -393,7 +393,7 @@ CREATE TABLE `fa_test` (
   `status` enum('normal','hidden') NOT NULL DEFAULT 'normal' COMMENT '状态',
   `state` enum('0','1','2') NOT NULL DEFAULT '1' COMMENT '状态值:0=禁用,1=正常,2=推荐',
   PRIMARY KEY (`id`)
-) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8 COMMENT='测试表';
+) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8mb4 COLLATE utf8mb4_unicode_ci COMMENT='测试表';
 
 -- ----------------------------
 -- Records of fa_test
@@ -439,7 +439,7 @@ CREATE TABLE `fa_user` (
   KEY `username` (`username`),
   KEY `email` (`email`),
   KEY `mobile` (`mobile`)
-) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8 COMMENT='会员表';
+) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8mb4 COLLATE utf8mb4_unicode_ci COMMENT='会员表';
 
 -- ----------------------------
 -- Records of fa_user
@@ -460,7 +460,7 @@ CREATE TABLE `fa_user_group` (
   `updatetime` int(10) DEFAULT NULL COMMENT '更新时间',
   `status` enum('normal','hidden') DEFAULT NULL COMMENT '状态',
   PRIMARY KEY (`id`)
-) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8 COMMENT='会员组表';
+) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8mb4 COLLATE utf8mb4_unicode_ci COMMENT='会员组表';
 
 -- ----------------------------
 -- Records of fa_user_group
@@ -482,7 +482,7 @@ CREATE TABLE `fa_user_money_log` (
   `memo` varchar(255) NOT NULL DEFAULT '' COMMENT '备注',
   `createtime` int(10) DEFAULT NULL COMMENT '创建时间',
   PRIMARY KEY (`id`)
-) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8 COMMENT='会员余额变动表';
+) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8mb4 COLLATE utf8mb4_unicode_ci COMMENT='会员余额变动表';
 
 -- ----------------------------
 -- Table structure for fa_user_rule
@@ -500,7 +500,7 @@ CREATE TABLE `fa_user_rule` (
   `weigh` int(10) DEFAULT '0' COMMENT '权重',
   `status` enum('normal','hidden') DEFAULT NULL COMMENT '状态',
   PRIMARY KEY (`id`)
-) ENGINE=InnoDB AUTO_INCREMENT=13 DEFAULT CHARSET=utf8 COMMENT='会员规则表';
+) ENGINE=InnoDB AUTO_INCREMENT=13 DEFAULT CHARSET=utf8mb4 COLLATE utf8mb4_unicode_ci COMMENT='会员规则表';
 
 -- ----------------------------
 -- Records of fa_user_rule
@@ -533,7 +533,7 @@ CREATE TABLE `fa_user_score_log` (
   `memo` varchar(255) NOT NULL DEFAULT '' COMMENT '备注',
   `createtime` int(10) DEFAULT NULL COMMENT '创建时间',
   PRIMARY KEY (`id`)
-) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8 COMMENT='会员积分变动表';
+) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8mb4 COLLATE utf8mb4_unicode_ci COMMENT='会员积分变动表';
 
 -- ----------------------------
 -- Table structure for fa_user_token
@@ -545,5 +545,5 @@ CREATE TABLE `fa_user_token` (
   `createtime` int(10) DEFAULT NULL COMMENT '创建时间',
   `expiretime` int(10) DEFAULT NULL COMMENT '过期时间',
   PRIMARY KEY (`token`)
-) ENGINE=InnoDB DEFAULT CHARSET=utf8 COMMENT='会员Token表';
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE utf8mb4_unicode_ci COMMENT='会员Token表';
 SET FOREIGN_KEY_CHECKS = 1;
diff --git a/application/database.php b/application/database.php
index e55d024..7b9f8f2 100755
--- a/application/database.php
+++ b/application/database.php
@@ -29,8 +29,8 @@ return [
     'dsn'             => '',
     // 数据库连接参数
     'params'          => [],
-    // 数据库编码默认采用utf8
-    'charset'         => Env::get('database.charset', 'utf8'),
+    // 数据库编码默认采用 utf8mb4
+    'charset'         => Env::get('database.charset', 'utf8mb4'),
     // 数据库表前缀
     'prefix'          => Env::get('database.prefix', 'fa_'),
     // 数据库调试模式