diff --git a/inference/modelInference/sampleYOLOV7MultiInput/src/main.cpp b/inference/modelInference/sampleYOLOV7MultiInput/src/main.cpp
index 7fd44e01a2cae2ff48663c968b5ec6233a64149f..ec53f76df9965317bb3c6809ef6115279b12435c 100644
--- a/inference/modelInference/sampleYOLOV7MultiInput/src/main.cpp
+++ b/inference/modelInference/sampleYOLOV7MultiInput/src/main.cpp
@@ -163,6 +163,7 @@ void CreateALLThreadInstance(vector<AclLiteThreadParam>& threadTbl, AclLiteResou
                         detectPostParam.threadInstName.assign(postName.c_str());
                         detectPostParam.context = context;
                         detectPostParam.runMode = runMode;
+                        dataInputParam.queueSize = kMsgQueueSize;
                         threadTbl.push_back(detectPostParam);
                     }
                     
@@ -171,6 +172,7 @@ void CreateALLThreadInstance(vector<AclLiteThreadParam>& threadTbl, AclLiteResou
                     dataOutputParam.threadInstName.assign(dataOutputName.c_str());
                     dataOutputParam.context = context;
                     dataOutputParam.runMode = runMode;
+                    dataInputParam.queueSize = kMsgQueueSize;
                     threadTbl.push_back(dataOutputParam);
 
                     if (outputType == "rtsp")
@@ -180,6 +182,7 @@ void CreateALLThreadInstance(vector<AclLiteThreadParam>& threadTbl, AclLiteResou
                         rtspDisplayThreadParam.threadInstName.assign(rtspDisplayName.c_str());
                         rtspDisplayThreadParam.context = context;
                         rtspDisplayThreadParam.runMode = runMode;
+                        dataInputParam.queueSize = kMsgQueueSize;
                         threadTbl.push_back(rtspDisplayThreadParam);
                     }
                     kExitCount++;