diff --git a/src/kit/taosdemo/taosdemo.c b/src/kit/taosdemo/taosdemo.c
index 4926165f55eb7098438edc7e622cbc2a8b481f2a..567983f578fcf77417ea288b0c6f4c904e9fb1d8 100644
--- a/src/kit/taosdemo/taosdemo.c
+++ b/src/kit/taosdemo/taosdemo.c
@@ -1508,156 +1508,6 @@ static void printfQuerySystemInfo(TAOS * taos) {
   
 }
 
-
-#ifdef TD_LOWA_CURL
-#if 0
-static size_t responseCallback(void *contents, size_t size, size_t nmemb, void *userp)
-{
-  size_t realsize = size * nmemb;
-  curlMemInfo* mem = (curlMemInfo*)userp;
- 
-  char *ptr = realloc(mem->buf, mem->sizeleft + realsize + 1);
-  if(ptr == NULL) {
-    /* out of memory! */ 
-    printf("not enough memory (realloc returned NULL)\n");
-    return 0;
-  }
- 
-  mem->buf = ptr;
-  memcpy(&(mem->buf[mem->sizeleft]), contents, realsize);
-  mem->sizeleft += realsize;
-  mem->buf[mem->sizeleft] = 0;
-
-  //printf("result:%s\n\n", mem->buf);
- 
-  return realsize;
-}
-
-void curlProceLogin(void)
-{
-  CURL *curl_handle;
-  CURLcode res;
- 
-  curlMemInfo chunk;
- 
-  chunk.buf = malloc(1);  /* will be grown as needed by the realloc above */ 
-  chunk.sizeleft = 0;    /* no data at this point */ 
- 
-  //curl_global_init(CURL_GLOBAL_ALL);
- 
-  /* init the curl session */ 
-  curl_handle = curl_easy_init();
-
-  curl_easy_setopt(curl_handle,CURLOPT_POSTFIELDS,"");
-  curl_easy_setopt(curl_handle, CURLOPT_POST, 1);
-
-  char dstUrl[128] = {0};
-  snprintf(dstUrl, 128, "http://%s:6041/rest/login/root/taosdata", g_Dbs.host);
-        
-  /* specify URL to get */ 
-  curl_easy_setopt(curl_handle, CURLOPT_URL, dstUrl);
- 
-  /* send all data to this function  */ 
-  curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION, responseCallback);
- 
-  /* we pass our 'chunk' struct to the callback function */ 
-  curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, (void *)&chunk);
- 
-  /* do it! */ 
-  res = curl_easy_perform(curl_handle);
- 
-  /* check for errors */ 
-  if(res != CURLE_OK) {
-    fprintf(stderr, "curl_easy_perform() failed: %s\n", curl_easy_strerror(res));
-  }
-  else {
-    //printf("response len:%lu, content: %s \n", (unsigned long)chunk.sizeleft, chunk.buf);
-    ;
-  }
- 
-  /* cleanup curl stuff */ 
-  curl_easy_cleanup(curl_handle);
- 
-  free(chunk.buf);
- 
-  /* we're done with libcurl, so clean it up */ 
-  //curl_global_cleanup();
- 
-  return;
-}
-#endif
-
-int curlProceSql(char* host, uint16_t port, char* sqlstr, CURL *curl_handle)
-{
-  //curlProceLogin();
-
-  //CURL *curl_handle;
-  CURLcode res;
- 
-  curlMemInfo chunk;
- 
-  chunk.buf = malloc(1);  /* will be grown as needed by the realloc above */ 
-  chunk.sizeleft = 0;    /* no data at this point */ 
-
-  
-  char dstUrl[128] = {0};
-  snprintf(dstUrl, 128, "http://%s:%u/rest/sql", host, port+TSDB_PORT_HTTP);
-        
-  //curl_global_init(CURL_GLOBAL_ALL);
- 
-  /* init the curl session */ 
-  //curl_handle = curl_easy_init();
- 
-  //curl_easy_setopt(curl_handle,CURLOPT_POSTFIELDS,"");
-  curl_easy_setopt(curl_handle, CURLOPT_POST, 1L);
-  
-  /* specify URL to get */ 
-  curl_easy_setopt(curl_handle, CURLOPT_URL, dstUrl);
-
-  /* enable TCP keep-alive for this transfer */
-  curl_easy_setopt(curl_handle, CURLOPT_TCP_KEEPALIVE, 1L);
-  /* keep-alive idle time to 120 seconds */
-  curl_easy_setopt(curl_handle, CURLOPT_TCP_KEEPIDLE, 120L);
-  /* interval time between keep-alive probes: 60 seconds */
-  curl_easy_setopt(curl_handle, CURLOPT_TCP_KEEPINTVL, 60L);
-  
-  /* send all data to this function  */ 
-  curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION, responseCallback);
- 
-  /* we pass our 'chunk' struct to the callback function */ 
-  curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, (void *)&chunk);
-
-  struct curl_slist *list = NULL;
-  list = curl_slist_append(list, "Authorization: Basic cm9vdDp0YW9zZGF0YQ==");
-  curl_easy_setopt(curl_handle, CURLOPT_HTTPHEADER, list);
-  curl_easy_setopt(curl_handle, CURLOPT_HTTPHEADER, list);
-
-  /* Set the expected upload size. */ 
-  curl_easy_setopt(curl_handle, CURLOPT_POSTFIELDSIZE_LARGE, (curl_off_t)strlen(sqlstr));
-  curl_easy_setopt(curl_handle, CURLOPT_POSTFIELDS, sqlstr);
-
-  /* get it! */ 
-  res = curl_easy_perform(curl_handle);
- 
-  /* check for errors */ 
-  if(res != CURLE_OK) {
-    fprintf(stderr, "curl_easy_perform() failed: %s\n", curl_easy_strerror(res));
-    return -1;
-  }
-  else {
-    /* curl_easy_perform() block end and return result */  
-    //printf("[%32.32s] sql response len:%lu, content: %s \n\n", sqlstr, (unsigned long)chunk.sizeleft, chunk.buf);
-    ;
-  }
-
-  curl_slist_free_all(list); /* free the list again */
-  
-  free(chunk.buf);
- 
-  return 0;
-}
-#endif
-
 #define REQ_EXTRA_BUF_LEN   1024
 #define RESP_BUF_LEN        4096