diff --git a/src/main/java/com/genersoft/iot/vmp/storager/impl/VideoManagerStoragerImpl.java b/src/main/java/com/genersoft/iot/vmp/storager/impl/VideoManagerStoragerImpl.java
index cf3f549a..2f4c9664 100644
--- a/src/main/java/com/genersoft/iot/vmp/storager/impl/VideoManagerStoragerImpl.java
+++ b/src/main/java/com/genersoft/iot/vmp/storager/impl/VideoManagerStoragerImpl.java
@@ -246,7 +246,7 @@ public class VideoManagerStoragerImpl implements IVideoManagerStorager {
 		}
 		try {
 			int cleanChannelsResult = deviceChannelMapper.cleanChannelsByDeviceId(deviceId);
-			int limitCount = 1;
+			int limitCount = 300;
 			boolean result = cleanChannelsResult < 0;
 			if (!result && channels.size() > 0) {
 				if (channels.size() > limitCount) {