diff --git a/ebike-report/src/main/java/com/cdzy/ebikereport/component/ReoprtHandler.java b/ebike-report/src/main/java/com/cdzy/ebikereport/component/ReoprtHandler.java
index c518aa5..d0e120d 100644
--- a/ebike-report/src/main/java/com/cdzy/ebikereport/component/ReoprtHandler.java
+++ b/ebike-report/src/main/java/com/cdzy/ebikereport/component/ReoprtHandler.java
@@ -37,7 +37,7 @@ public class ReoprtHandler {
     public void reportHandler(JsonNode response) {
         int c = response.get("c").asInt();
         JsonNode param = response.get("param");
-        String deviceId = param.get("sn").asText();
+        String deviceId = param.get("SN").asText();
         switch (c) {
             case 56:
                 gpsMsgHandler(param, deviceId);