diff --git a/scripts/prod-backend.sh b/scripts/prod-backend.sh
index 4fcfbf1..d98196c 100755
--- a/scripts/prod-backend.sh
+++ b/scripts/prod-backend.sh
@@ -115,7 +115,7 @@ sleep 4
 # 验证 daemon 是否就绪（用简单的 topic list 测试）
 DAEMON_OK=0
 for i in $(seq 1 5); do
-    DAEMON_TOPICS=$(source "$ROS_SETUP" && ROS_DOMAIN_ID=$ROS_DOMAIN_ID_VAL timeout 3 ros2 topic list 2>&1 | wc -l || echo 0)
+    DAEMON_TOPICS=$(bash -c "source \"$ROS_SETUP\" && ROS_DOMAIN_ID=$ROS_DOMAIN_ID_VAL timeout 3 ros2 topic list 2>&1" | wc -l || echo 0)
     if [ "$DAEMON_TOPICS" -gt 0 ]; then
         DAEMON_OK=1
         echo "   ✅ ros2 daemon 就绪"
@@ -285,7 +285,7 @@ echo "=========================================="
 # 8a. 验证 ros2 topic list（核心指标）
 echo ""
 echo "验证 ros2 topic list..."
-TOPIC_COUNT=$(source "$ROS_SETUP" && ROS_DOMAIN_ID=$ROS_DOMAIN_ID_VAL timeout 5 ros2 topic list 2>/dev/null | wc -l || echo 0)
+TOPIC_COUNT=$(bash -c "source \"$ROS_SETUP\" && ROS_DOMAIN_ID=$ROS_DOMAIN_ID_VAL timeout 5 ros2 topic list 2>/dev/null" | wc -l || echo 0)
 echo "   话题数量: $TOPIC_COUNT"
 if [ "$TOPIC_COUNT" -gt 10 ]; then
     echo "   ✅ ros2 daemon 正常 (${TOPIC_COUNT} 个话题)"