diff --git a/plugins/mysql/index.py b/plugins/mysql/index.py
index 5811ef91c..5c015c873 100755
--- a/plugins/mysql/index.py
+++ b/plugins/mysql/index.py
@@ -3106,7 +3106,7 @@ def doFullSyncUser(version=''):
     # --force --opt --single-transaction
     if not os.path.exists(bak_file):
         # 不锁表导出
-        dump_sql_data = getServerDir() + "/bin/mysqldump " + dmp_option + " --single-transaction -q -R --skip-opt --create-options --default-character-set=utf8 -h" + ip + " -P" + \
+        dump_sql_data = getServerDir() + "/bin/mysqldump " + dmp_option + " --single-transaction -q -R --skip-opt --create-options --default-character-set=utf8mb4 -h" + ip + " -P" + \
             port + " -u" + user + " -p'" + apass + "' --ssl-mode=DISABLED " + sync_db + " > " + bak_file
         print(dump_sql_data)
         mw.execShell(dump_sql_data)