diff --git a/src/client/src/tscParseOpenTSDB.c b/src/client/src/tscParseOpenTSDB.c
index a35d28964767b8f4ea61a138d507a8289beca4ae..c2a58e1315035747f92ec81be39112f5df8acd41 100644
--- a/src/client/src/tscParseOpenTSDB.c
+++ b/src/client/src/tscParseOpenTSDB.c
@@ -521,7 +521,8 @@ int32_t parseValueFromJSON(cJSON *root, TAOS_SML_KV *pVal) {
     case cJSON_String: {
       //convert default JSON String type to nchar
       pVal->type = TSDB_DATA_TYPE_NCHAR;
-      pVal->length = wcslen((wchar_t *)root->valuestring) * TSDB_NCHAR_SIZE;
+      //pVal->length = wcslen((wchar_t *)root->valuestring) * TSDB_NCHAR_SIZE;
+      pVal->length = strlen(root->valuestring);
       pVal->value = tcalloc(pVal->length + 1, 1);
       memcpy(pVal->value, root->valuestring, pVal->length);
       break;