diff --git a/cs-device/cs-device-boot/src/main/java/com/njcn/csdevice/controller/equipment/DeviceFtpController.java b/cs-device/cs-device-boot/src/main/java/com/njcn/csdevice/controller/equipment/DeviceFtpController.java
index 67165ff..dc6213b 100644
--- a/cs-device/cs-device-boot/src/main/java/com/njcn/csdevice/controller/equipment/DeviceFtpController.java
+++ b/cs-device/cs-device-boot/src/main/java/com/njcn/csdevice/controller/equipment/DeviceFtpController.java
@@ -79,10 +79,10 @@ public class DeviceFtpController extends BaseController {
     public HttpResult<String> downloadFile(@RequestParam("nDid") String nDid, @RequestParam("name") String name, @RequestParam("size") Integer size, @RequestParam("fileCheck") String fileCheck){
         String methodDescribe = getMethodDescribe("downloadFile");
         String result = deviceFtpService.downloadFile(nDid,name,size,fileCheck);
+        redisUtil.delete("downloadFilePath:"+name);
+        redisUtil.delete("fileCheck"+name);
+        redisUtil.delete("fileDowning:"+nDid);
         if (Objects.isNull(result)) {
-            redisUtil.delete("downloadFilePath:"+name);
-            redisUtil.delete("fileCheck"+name);
-            redisUtil.delete("fileDowning");
             return HttpResultUtil.assembleCommonResponseResult(CommonResponseEnum.FAIL, null, methodDescribe);
         } else {
             return HttpResultUtil.assembleCommonResponseResult(CommonResponseEnum.SUCCESS, result, methodDescribe);
diff --git a/cs-device/cs-device-boot/src/main/java/com/njcn/csdevice/service/impl/DeviceFtpServiceImpl.java b/cs-device/cs-device-boot/src/main/java/com/njcn/csdevice/service/impl/DeviceFtpServiceImpl.java
index 67ba226..6fc47aa 100644
--- a/cs-device/cs-device-boot/src/main/java/com/njcn/csdevice/service/impl/DeviceFtpServiceImpl.java
+++ b/cs-device/cs-device-boot/src/main/java/com/njcn/csdevice/service/impl/DeviceFtpServiceImpl.java
@@ -89,7 +89,7 @@ public class DeviceFtpServiceImpl implements DeviceFtpService {
     public String downloadFile(String nDid, String name, Integer size, String fileCheck) {
         String result = null;
         judgeClientOnline(nDid);
-        Object task = redisUtil.getObjectByKey("fileDowning");
+        Object task = redisUtil.getObjectByKey("fileDowning:"+nDid);
         if (Objects.nonNull(task)) {
             throw new BusinessException(AlgorithmResponseEnum.FILE_DOWNLOADING);
         }
@@ -102,7 +102,7 @@ public class DeviceFtpServiceImpl implements DeviceFtpService {
             boolean file = askDeviceDataFeignClient.downloadFile(nDid,name,size,fileCheck).getData();
             Thread.sleep(5000);
             if (!file) {
-                redisUtil.delete("fileDowning");
+                redisUtil.delete("fileDowning:"+nDid);
                 redisUtil.delete("fileCheck"+name);
                 throw new BusinessException(AlgorithmResponseEnum.FILE_DOWNLOAD_ERROR);
             }
@@ -111,10 +111,10 @@ public class DeviceFtpServiceImpl implements DeviceFtpService {
                 result = (String) object;
                 redisUtil.delete("downloadFilePath:"+name);
                 redisUtil.delete("fileCheck"+name);
-                redisUtil.delete("fileDowning");
+                redisUtil.delete("fileDowning:"+nDid);
             }
         } catch (Exception e) {
-            redisUtil.delete("fileDowning");
+            redisUtil.delete("fileDowning:"+nDid);
             redisUtil.delete("fileCheck"+name);
             throw new BusinessException(AlgorithmResponseEnum.FILE_DOWNLOADING);
         }