diff --git a/main.go b/main.go
index 1a54e75..3d2e522 100644
--- a/main.go
+++ b/main.go
@@ -100,7 +100,7 @@ func ReadConfigAndSetSystem() {
 		if !ok {
 			//说明没有这个设备，需初始化添加
 			service.DeviceRWMap.Store(device.ID, &sync.RWMutex{})
-			service.DeviceCurrentFrameMap = map[int]gocv.Mat{}
+			service.DeviceCurrentFrameMap[device.ID] = gocv.NewMat()
 			service.DeviceFrameCount.Store(device.ID, 0)
 			service.DeviceIsGettingFrame.Store(device.ID, false)
 		}