diff --git a/src/main/java/com/gzzn/omms/msgexchangeapi/service/FltrSendBufferService.java b/src/main/java/com/gzzn/omms/msgexchangeapi/service/FltrSendBufferService.java
index d3f94c8c..e6797a5c 100644
--- a/src/main/java/com/gzzn/omms/msgexchangeapi/service/FltrSendBufferService.java
+++ b/src/main/java/com/gzzn/omms/msgexchangeapi/service/FltrSendBufferService.java
@@ -33,8 +33,12 @@ public class FltrSendBufferService implements IFltrSendBufferService {
 		}
 		
 		//
-		FLTR[] fltrs = (FLTR[]) fltrBuffer.toArray(new FLTR[fltrBuffer.size()]); // TODO 转换出错
-		fltrBuffer.clear();//to fix ,获取及清空过程中是否要加锁
+		FLTR[] fltrs = null;
+		synchronized (fltrBuffer) {
+			fltrs = (FLTR[]) fltrBuffer.toArray(new FLTR[fltrBuffer.size()]); 
+			fltrBuffer.clear();
+		}
+		
 		
 		return Arrays.asList(fltrs);
 	}