diff --git a/iot-machine-state-event-generator-job/src/main/java/com/qniao/iot/machine/event/generator/job/IotMachineEventGeneratorJob.java b/iot-machine-state-event-generator-job/src/main/java/com/qniao/iot/machine/event/generator/job/IotMachineEventGeneratorJob.java
index 6608f77..ecaf516 100644
--- a/iot-machine-state-event-generator-job/src/main/java/com/qniao/iot/machine/event/generator/job/IotMachineEventGeneratorJob.java
+++ b/iot-machine-state-event-generator-job/src/main/java/com/qniao/iot/machine/event/generator/job/IotMachineEventGeneratorJob.java
@@ -218,8 +218,10 @@ public class IotMachineEventGeneratorJob {
                                 }
                                 if((event.getCurrJobCount() != 0 && event.getCurrJobDuration() != 0)
                                         || (event.getCurrJobCount() == 0 && event.getCurrJobDuration() == 0)) {
-                                    ctx.output(machineIotDataReceivedEventOutput, event);
-                                    collDeviceStatusChange(out, deviceState, lastDataReceivedEvent, event);
+                                    MachineIotDataReceivedEvent receivedEvent = collDeviceStatusChange(out, deviceState, lastDataReceivedEvent, event);
+                                    if(receivedEvent != null) {
+                                        ctx.output(machineIotDataReceivedEventOutput, event);
+                                    }
                                     lastDataReceivedEventState.update(event);
                                 }
                             }
@@ -503,7 +505,7 @@ public class IotMachineEventGeneratorJob {
         }
     }
 
-    private static void collDeviceStatusChange(Collector<BaseCommand> out,
+    private static MachineIotDataReceivedEvent collDeviceStatusChange(Collector<BaseCommand> out,
                                                DeviceState deviceState,
                                                MachineIotDataReceivedEvent lastDataReceivedEvent,
                                                MachineIotDataReceivedEvent event) {
@@ -541,6 +543,7 @@ public class IotMachineEventGeneratorJob {
             command.setTimestamp(reportTime);
             out.collect(command);
             out.collect(machineOutputCommand);
+            return event;
         } else if ((lastWorkingStat == 1 || lastWorkingStat == 2) && workingStat == 0) {
             // 设备关机
             PowerOffMachineCommand command = new PowerOffMachineCommand();
@@ -553,6 +556,7 @@ public class IotMachineEventGeneratorJob {
             command.setTimestamp(reportTime);
             out.collect(command);
             out.collect(machineOutputCommand);
+            return event;
         } else if (lastWorkingStat == 1 && workingStat == 2) {
             // 设备开始待机
             StopMachineWorkingCommand command = new StopMachineWorkingCommand();
@@ -565,6 +569,7 @@ public class IotMachineEventGeneratorJob {
             command.setTimestamp(reportTime);
             out.collect(command);
             out.collect(machineOutputCommand);
+            return event;
         } else if ((lastWorkingStat == 2 || lastWorkingStat == 1) && workingStat == 1) {
             // 设备开始工作
             StartMachineWorkingCommand command = new StartMachineWorkingCommand();
@@ -577,6 +582,8 @@ public class IotMachineEventGeneratorJob {
             command.setTimestamp(reportTime);
             out.collect(command);
             out.collect(machineOutputCommand);
+            return event;
         }
+        return null;
     }
 }