diff --git a/script/deploy/deploy-all.sh b/script/deploy/deploy-all.sh
index 9bb831ab0c..1e6cc86b3a 100644
--- a/script/deploy/deploy-all.sh
+++ b/script/deploy/deploy-all.sh
@@ -66,7 +66,8 @@ deploy_backend() {
     log "1.5 后台启动服务..."
     cd $BACKEND_DIR
     # 完全脱离终端重定向，防止脚本挂起
-    nohup java -Xms512m -Xmx1024m -jar $BACKEND_JAR_NAME --spring.profiles.active=prod > ./logs/console.log 2>&1 &
+    # 注意：JVM参数(-Xms/-Xmx)必须在 -jar 之前
+    nohup $JAVA_HOME/bin/java -Xms512m -Xmx1024m -jar $BACKEND_JAR_NAME --server.port=9900 > ./logs/console.log 2>&1 &
     
     log "✅ 后端启动成功 (PID: $!)"
 }