diff --git a/protocol.c b/protocol.c
index 5ccde65..8fc38eb 100644
--- a/protocol.c
+++ b/protocol.c
@@ -1347,7 +1347,7 @@ static void packMsgToHost(uint16_t funcCode, uint8_t isOK) {
     if(funcCode == HOST_CMD_STATUS_QUERY) {
         dlen = sizeof(DeviceStatus_t);
         index = sizeof(FRAME_TAIL)+2;
-        msgBuf[index] = 17;
+        msgBuf[index] = dlen;//#pragma pack(1)后大小正确
         index += 1;
         //系统是小端序，将deviceStatus转换为大端序
         memcpy(msgBuf+index, &deviceStatus.sensorStatus, 1);
diff --git a/protocol.h b/protocol.h
index 2f929b9..d7ee3d4 100644
--- a/protocol.h
+++ b/protocol.h
@@ -375,6 +375,8 @@ typedef enum {
     INIT_FAILED = 2
 } InitStatus_t;
 
+// 大小对齐至1字节
+#pragma pack(1)
 // 三通阀结构体
 typedef struct {
     uint16_t angle[2];        // 阀门实时角度