diff --git a/src/main/java/com/qyft/gd/device/service/DeviceStepService.java b/src/main/java/com/qyft/gd/device/service/DeviceStepService.java
index 009f0ce..afdfa63 100644
--- a/src/main/java/com/qyft/gd/device/service/DeviceStepService.java
+++ b/src/main/java/com/qyft/gd/device/service/DeviceStepService.java
@@ -88,7 +88,7 @@ public class DeviceStepService {
     }
 
     //移至加热
-    public boolean moveToHeater(int heaterId) {
+    public boolean moveToHeater(String heaterId) {
         return true;
     }
 
@@ -98,12 +98,12 @@ public class DeviceStepService {
     }
 
     //开始加热
-    public boolean startHeating(int heaterId) {
+    public boolean startHeating(String heaterId) {
         return true;
     }
 
     //停止加热
-    public boolean stopHeating(int heaterId) {
+    public boolean stopHeating(String heaterId) {
         return true;
     }