diff --git a/cmd/static/cmd.go b/cmd/static/cmd.go
index a2bf7472..958dc106 100644
--- a/cmd/static/cmd.go
+++ b/cmd/static/cmd.go
@@ -131,7 +131,7 @@ Examples:
 
 Examples:
   # Generate DB model code 
-  cwgo  model --db_type mysql --dsn "gorm:gorm@tcp(localhost:9910)/gorm?charset=utf8&parseTime=True&loc=Local"
+  cwgo  model --db_type mysql --dsn "gorm:gorm@tcp(localhost:9910)/gorm?charset=utf8mb4&parseTime=True&loc=Local"
 `
 
 	InitName  = "init"
diff --git a/example/hex/conf/dev/conf.yaml b/example/hex/conf/dev/conf.yaml
index 811b9121..7879cb20 100644
--- a/example/hex/conf/dev/conf.yaml
+++ b/example/hex/conf/dev/conf.yaml
@@ -14,7 +14,7 @@ registry:
   password: ""
 
 mysql:
-  dsn: "gorm:gorm@tcp(127.0.0.1:3306)/gorm?charset=utf8&parseTime=True&loc=Local"
+  dsn: "gorm:gorm@tcp(127.0.0.1:3306)/gorm?charset=utf8mb4&parseTime=True&loc=Local"
 redis:
   address: "127.0.0.1:6379"
   username: ""
diff --git a/example/hex/conf/online/conf.yaml b/example/hex/conf/online/conf.yaml
index 811b9121..7879cb20 100644
--- a/example/hex/conf/online/conf.yaml
+++ b/example/hex/conf/online/conf.yaml
@@ -14,7 +14,7 @@ registry:
   password: ""
 
 mysql:
-  dsn: "gorm:gorm@tcp(127.0.0.1:3306)/gorm?charset=utf8&parseTime=True&loc=Local"
+  dsn: "gorm:gorm@tcp(127.0.0.1:3306)/gorm?charset=utf8mb4&parseTime=True&loc=Local"
 redis:
   address: "127.0.0.1:6379"
   username: ""
diff --git a/example/hex/conf/test/conf.yaml b/example/hex/conf/test/conf.yaml
index 811b9121..7879cb20 100644
--- a/example/hex/conf/test/conf.yaml
+++ b/example/hex/conf/test/conf.yaml
@@ -14,7 +14,7 @@ registry:
   password: ""
 
 mysql:
-  dsn: "gorm:gorm@tcp(127.0.0.1:3306)/gorm?charset=utf8&parseTime=True&loc=Local"
+  dsn: "gorm:gorm@tcp(127.0.0.1:3306)/gorm?charset=utf8mb4&parseTime=True&loc=Local"
 redis:
   address: "127.0.0.1:6379"
   username: ""
diff --git a/tpl/hertz/server/standard/layout.yaml b/tpl/hertz/server/standard/layout.yaml
index ff4135f2..367d6f78 100644
--- a/tpl/hertz/server/standard/layout.yaml
+++ b/tpl/hertz/server/standard/layout.yaml
@@ -264,7 +264,7 @@ layouts:
         log_max_backups: 50
 
       mysql:
-        dsn: "gorm:gorm@tcp(127.0.0.1:3306)/gorm?charset=utf8&parseTime=True&loc=Local"
+        dsn: "gorm:gorm@tcp(127.0.0.1:3306)/gorm?charset=utf8mb4&parseTime=True&loc=Local"
 
       redis:
         address: "127.0.0.1:6379"
@@ -289,7 +289,7 @@ layouts:
         log_max_backups: 50
 
       mysql:
-        dsn: "gorm:gorm@tcp(127.0.0.1:3306)/gorm?charset=utf8&parseTime=True&loc=Local"
+        dsn: "gorm:gorm@tcp(127.0.0.1:3306)/gorm?charset=utf8mb4&parseTime=True&loc=Local"
 
       redis:
         address: "127.0.0.1:6379"
@@ -314,7 +314,7 @@ layouts:
         log_max_backups: 50
 
       mysql:
-        dsn: "gorm:gorm@tcp(127.0.0.1:3306)/gorm?charset=utf8&parseTime=True&loc=Local"
+        dsn: "gorm:gorm@tcp(127.0.0.1:3306)/gorm?charset=utf8mb4&parseTime=True&loc=Local"
 
       redis:
         address: "127.0.0.1:6379"
diff --git a/tpl/kitex/server/standard/conf_dev_tpl.yaml b/tpl/kitex/server/standard/conf_dev_tpl.yaml
index 76933d6e..3b6ea695 100644
--- a/tpl/kitex/server/standard/conf_dev_tpl.yaml
+++ b/tpl/kitex/server/standard/conf_dev_tpl.yaml
@@ -18,7 +18,7 @@ body: |-
     password: ""
 
   mysql:
-    dsn: "gorm:gorm@tcp(127.0.0.1:3306)/gorm?charset=utf8&parseTime=True&loc=Local"
+    dsn: "gorm:gorm@tcp(127.0.0.1:3306)/gorm?charset=utf8mb4&parseTime=True&loc=Local"
   
   redis:
     address: "127.0.0.1:6379"
diff --git a/tpl/kitex/server/standard/conf_online_tpl.yaml b/tpl/kitex/server/standard/conf_online_tpl.yaml
index b3a604e1..ffece9cf 100644
--- a/tpl/kitex/server/standard/conf_online_tpl.yaml
+++ b/tpl/kitex/server/standard/conf_online_tpl.yaml
@@ -18,7 +18,7 @@ body: |-
     password: ""
 
   mysql:
-    dsn: "gorm:gorm@tcp(127.0.0.1:3306)/gorm?charset=utf8&parseTime=True&loc=Local"
+    dsn: "gorm:gorm@tcp(127.0.0.1:3306)/gorm?charset=utf8mb4&parseTime=True&loc=Local"
   
   redis:
     address: "127.0.0.1:6379"
diff --git a/tpl/kitex/server/standard/conf_test_tpl.yaml b/tpl/kitex/server/standard/conf_test_tpl.yaml
index 7a4a287c..773c8977 100644
--- a/tpl/kitex/server/standard/conf_test_tpl.yaml
+++ b/tpl/kitex/server/standard/conf_test_tpl.yaml
@@ -18,7 +18,7 @@ body: |-
     password: ""
 
   mysql:
-    dsn: "gorm:gorm@tcp(127.0.0.1:3306)/gorm?charset=utf8&parseTime=True&loc=Local"
+    dsn: "gorm:gorm@tcp(127.0.0.1:3306)/gorm?charset=utf8mb4&parseTime=True&loc=Local"
   
   redis:
     address: "127.0.0.1:6379"