diff --git a/pkg/common/db/relation/mysql_init.go b/pkg/common/db/relation/mysql_init.go
index c7b7062b0..43d07b646 100644
--- a/pkg/common/db/relation/mysql_init.go
+++ b/pkg/common/db/relation/mysql_init.go
@@ -30,7 +30,7 @@ func newMysqlGormDB() (*gorm.DB, error) {
 		return nil, err
 	}
 	defer sqlDB.Close()
-	sql := fmt.Sprintf("CREATE DATABASE IF NOT EXISTS %s default charset utf8 COLLATE utf8_general_ci;", config.Config.Mysql.DBDatabaseName)
+	sql := fmt.Sprintf("CREATE DATABASE IF NOT EXISTS %s default charset utf8mb4 COLLATE utf8mb4_unicode_ci;", config.Config.Mysql.DBDatabaseName)
 	err = db.Exec(sql).Error
 	if err != nil {
 		return nil, fmt.Errorf("init db %w", err)