diff --git a/xhpc-modules/xhpc-power-pile/src/main/java/com/xhpc/pp/controller/StationController.java b/xhpc-modules/xhpc-power-pile/src/main/java/com/xhpc/pp/controller/StationController.java
index dcf7e2ce..e80b096f 100644
--- a/xhpc-modules/xhpc-power-pile/src/main/java/com/xhpc/pp/controller/StationController.java
+++ b/xhpc-modules/xhpc-power-pile/src/main/java/com/xhpc/pp/controller/StationController.java
@@ -8,6 +8,8 @@ import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RestController;
 
+import java.util.Set;
+
 import static com.xhpc.pp.server.ChargingPileServer.REDIS;
 
 @RestController
@@ -24,7 +26,10 @@ public class StationController {
         String rkey = "rateModel:".concat(rateModelId.toString());
         REDIS.setCacheObject(rkey, rateModel);
         String rmskey = "rateModelStation:".concat(stationId.toString());
-        REDIS.setCacheSet(rmskey, cacheStation.getPiles());
+        Set<String> piles = cacheStation.getPiles();
+        if (piles!=null) {
+            REDIS.setCacheSet(rmskey, piles);
+        }
         return R.ok();
     }