diff --git a/src/common/channel.cpp b/src/common/channel.cpp
index fa9a801a273142eaaec3637b55b326649c1c353f..08558720b6883379fe74d543f6e59250e4ad8a21 100644
--- a/src/common/channel.cpp
+++ b/src/common/channel.cpp
@@ -129,9 +129,20 @@ void HdcChannelBase::ReadStream(uv_stream_t *tcp, ssize_t nread, const uv_buf_t
         if (hChannel->availTailIndex - DWORD_SERIALIZE_SIZE < size) {
             break;
         }
-        if (thisClass->ReadChannel(hChannel, (uint8_t *)hChannel->ioBuf + DWORD_SERIALIZE_SIZE + indexBuf, size) < 0) {
-            needExit = true;
-            break;
+
+        if (!strncmp((char *)hChannel->ioBuf + DWORD_SERIALIZE_SIZE, LONG_CONN_MESSAGE.c_str(), LONG_CONN_MESSAGE.size())) { //HLONG is need long connect
+            if (thisClass->ReadChannel(hChannel, (uint8_t *)hChannel->ioBuf + LONG_CONN_MESSAGE.size() + DWORD_SERIALIZE_SIZE + indexBuf, size) < 0) {
+                // update io
+                hChannel->availTailIndex -= (DWORD_SERIALIZE_SIZE + size);
+                indexBuf += DWORD_SERIALIZE_SIZE + size;
+                needExit = false; // keep connect
+                break;
+            }
+        } else {
+            if (thisClass->ReadChannel(hChannel, (uint8_t *)hChannel->ioBuf + DWORD_SERIALIZE_SIZE + indexBuf, size) < 0) {
+                needExit = true;
+                break;
+            }
         }
         // update io
         hChannel->availTailIndex -= (DWORD_SERIALIZE_SIZE + size);
@@ -427,4 +438,4 @@ HChannel HdcChannelBase::AdminChannel(const uint8_t op, const uint32_t channelId
     }
     return hRet;
 }
-}
\ No newline at end of file
+}
diff --git a/src/common/define.h b/src/common/define.h
index 7b1f6396c42872e158383b9adc951a9f5f55ab22..495660d62605997283fed09379d2eeed058eabfc 100644
--- a/src/common/define.h
+++ b/src/common/define.h
@@ -54,6 +54,7 @@ const string UT_TMP_PATH = "/tmp/hdc-ut";
 const string SERVER_NAME = "HDCServer";
 const string STRING_EMPTY = "";
 const string HANDSHAKE_MESSAGE = "OHOS HDC";  // sep not char '-', not more than 11 bytes
+const string LONG_CONN_MESSAGE = "HLONG";     // long socket connect flag
 const string PACKET_FLAG = "HW";              // must 2bytes
 const string EMPTY_ECHO = "[Empty]";
 const string MESSAGE_INFO = "[Info]";