diff --git a/tests/examples/lua/lua_connector.c b/tests/examples/lua/lua_connector.c
index 143f16a799244d4b77f3d01c4d2189fa6519b0d9..39fb86ce478450d4a954fdda09e1b1e52b711499 100644
--- a/tests/examples/lua/lua_connector.c
+++ b/tests/examples/lua/lua_connector.c
@@ -13,17 +13,49 @@ struct cb_param{
   void * stream;
 };
 
+static int l_connect(lua_State *L){
+  TAOS *    taos=NULL;
+  char* host;
+  char* database;
+  char* user;
+  char* password;
+  int port;
+
+  luaL_checktype(L, 1, LUA_TTABLE);
+
+  lua_getfield(L,-1,"host");
+  if (lua_isstring(L,-1)){
+    host = lua_tostring(L, -1);
+    // printf("host = %s\n", host);
+  }
+  
+  lua_getfield(L, 1, "port");
+  if (lua_isinteger(L,-1)){
+    port = lua_tointeger(L, -1);
+    //printf("port = %d\n", port);
+  }
+  
+  lua_getfield(L, 1, "database");
+  if (lua_isstring(L, -1)){
+    database = lua_tostring(L, -1);
+    //printf("database = %s\n", database);
+  }
+  
+  lua_getfield(L, 1, "user");
+  if (lua_isstring(L, -1)){
+    user = lua_tostring(L, -1);
+    //printf("user = %s\n", user);
+  }
+
+  lua_getfield(L, 1, "password");
+  if (lua_isstring(L, -1)){
+    password = lua_tostring(L, -1);
+    //printf("password = %s\n", password);
+  }
 
+  lua_settop(L,0);
 
-static int l_connect(lua_State *L){
-  TAOS *    taos;
-  char *host = lua_tostring(L, 1);
-  char *user = lua_tostring(L, 2);
-  char *password = lua_tostring(L, 3);
-  char *database = lua_tostring(L, 4);
-  int port =luaL_checknumber(L, 5);
   taos_init();
-  
   lua_newtable(L);
   int table_index = lua_gettop(L);
 
@@ -31,22 +63,22 @@ static int l_connect(lua_State *L){
   if (taos == NULL) {
     printf("failed to connect server, reason:%s\n", taos_errstr(taos));
     
-    lua_pushnumber(L, -1);
+    lua_pushinteger(L, -1);
     lua_setfield(L, table_index, "code");
     lua_pushstring(L, taos_errstr(taos));
     lua_setfield(L, table_index, "error");    
     lua_pushlightuserdata(L,NULL);
     lua_setfield(L, table_index, "conn");
   }else{
-    printf("success to connect server\n");
-    lua_pushnumber(L, 0);
+    // printf("success to connect server\n");
+    lua_pushinteger(L, 0);
     lua_setfield(L, table_index, "code");
     lua_pushstring(L, taos_errstr(taos));
     lua_setfield(L, table_index, "error");    
     lua_pushlightuserdata(L,taos);
     lua_setfield(L, table_index, "conn");
   }
-
+  
   return 1;
 }
 
@@ -62,7 +94,7 @@ static int l_query(lua_State *L){
     int32_t code = taos_errno(result);
   if( code != 0){
     printf("failed, reason:%s\n", taos_errstr(result));
-    lua_pushnumber(L, -1);
+    lua_pushinteger(L, -1);
     lua_setfield(L, table_index, "code");    
     lua_pushstring(L, taos_errstr(taos));
     lua_setfield(L, table_index, "error");    
@@ -79,7 +111,7 @@ static int l_query(lua_State *L){
 
     int affectRows = taos_affected_rows(result);
     //    printf(" affect rows:%d\r\n", affectRows);
-    lua_pushnumber(L, 0);
+    lua_pushinteger(L, 0);
     lua_setfield(L, table_index, "code");
     lua_pushinteger(L, affectRows);
     lua_setfield(L, table_index, "affected");
@@ -150,8 +182,8 @@ void stream_cb(void *param, TAOS_RES *result, TAOS_ROW row){
   TAOS_FIELD *fields = taos_fetch_fields(result);
   int         numFields = taos_num_fields(result);
 
-  printf("\nnumfields:%d\n", numFields);
-  printf("\n\r-----------------------------------------------------------------------------------\n");
+  // printf("\nnumfields:%d\n", numFields);
+  //printf("\n\r-----------------------------------------------------------------------------------\n");
 
   lua_State *L = p->state;
   lua_rawgeti(L, LUA_REGISTRYINDEX, p->callback);
@@ -204,7 +236,7 @@ void stream_cb(void *param, TAOS_RES *result, TAOS_ROW row){
 
   lua_call(L, 1, 0);
 
-  printf("-----------------------------------------------------------------------------------\n\r");
+  //  printf("-----------------------------------------------------------------------------------\n\r");
 }
 
 static int l_open_stream(lua_State *L){
diff --git a/tests/examples/lua/test.lua b/tests/examples/lua/test.lua
index 4d5f9fe7d36f99f9a9452e8137bf298361a05685..9f9c6934aa46d52e1578700b067193351120dbab 100644
--- a/tests/examples/lua/test.lua
+++ b/tests/examples/lua/test.lua
@@ -1,93 +1,117 @@
 local driver = require "luaconnector"
 
-local host="127.0.0.1"
-local user="root"
-local password="taosdata"
-local db =nil
-local port=6030
-local conn
+local config = {
+   host = "127.0.0.1",
+   port = 6030,
+   database = "",
+   user = "root",
+   password = "taosdata",
+   max_packet_size = 1024 * 1024 
+}
 
-local res = driver.connect(host,user,password,db,port)
+local conn
+local res = driver.connect(config)
 if res.code ~=0 then
-   print(res.error)
+   print("connect--- failed: "..res.error)
    return
 else
    conn = res.conn
+   print("connect--- pass.")
 end
 
 local res = driver.query(conn,"drop database if exists demo")
 
 res = driver.query(conn,"create database demo")
 if res.code ~=0 then
-   print(res.error)
+   print("create db--- failed: "..res.error)
    return
+else
+   print("create db--- pass.")
 end
 
 res = driver.query(conn,"use demo")
 if res.code ~=0 then
-   print(res.error)
+   print("select db--- failed: "..res.error)
    return
+else
+   print("select db--- pass.")
 end
 
 res = driver.query(conn,"create table m1 (ts timestamp, speed int,owner binary(20))")
 if res.code ~=0 then
-   print(res.error)
+   print("create table---failed: "..res.error)
    return
+else
+   print("create table--- pass.")
 end
 
 res = driver.query(conn,"insert into m1 values ('2019-09-01 00:00:00.001',0,'robotspace'), ('2019-09-01 00:00:00.002',1,'Hilink'),('2019-09-01 00:00:00.003',2,'Harmony')")
 if res.code ~=0 then
-   print(res.error)
+   print("insert records failed: "..res.error)
    return
 else
-   print("insert successfully, affected:"..res.affected)
+   if(res.affected == 3) then
+      print("insert records--- pass")
+   else
+      print("insert records---failed: expect 3 affected records, actually affected "..res.affected)
+   end   
 end
 
 res = driver.query(conn,"select * from m1")
 
 if res.code ~=0 then
-   print("select error:"..res.error)
+   print("select failed: "..res.error)
    return
 else
-   print("in lua, result:")
-   for i = 1, #(res.item) do
-      print("timestamp:"..res.item[i].ts)
-      print("speed:"..res.item[i].speed)
-      print("owner:"..res.item[i].owner)
-   end
+    if (#(res.item) == 3) then
+	print("select--- pass")
+    else
+	print("select--- failed: expect 3 affected records, actually received "..#(res.item))
+    end
+
 end
 
 res = driver.query(conn,"CREATE TABLE thermometer (ts timestamp, degree double) TAGS(location binary(20), type int)")
 if res.code ~=0 then
    print(res.error)
    return
+else
+   print("create super table--- pass")
 end
 res = driver.query(conn,"CREATE TABLE therm1 USING thermometer TAGS ('beijing', 1)")
 if res.code ~=0 then
    print(res.error)
    return
+else
+   print("create table--- pass")
 end
+
 res = driver.query(conn,"INSERT INTO therm1 VALUES ('2019-09-01 00:00:00.001', 20),('2019-09-01 00:00:00.002', 21)")
 
 if res.code ~=0 then
    print(res.error)
    return
 else
-   print("insert successfully, affected:"..res.affected)
+   if(res.affected == 2) then
+      print("insert records--- pass")
+   else
+      print("insert records---failed: expect 2 affected records, actually affected "..res.affected)
+   end 
 end
 
 res = driver.query(conn,"SELECT COUNT(*) count, AVG(degree) AS av, MAX(degree), MIN(degree) FROM thermometer WHERE location='beijing' or location='tianjin' GROUP BY location, type")
 if res.code ~=0 then
-   print("select error:"..res.error)
+   print("select from super table--- failed:"..res.error)
    return
 else
-   print("in lua, result:")
+   print("select from super table--- pass")
    for i = 1, #(res.item) do
       print("res:"..res.item[i].count)
    end
 end
 
 function callback(t)
+   print("------------------------")
    print("continuous query result:")
    for key, value in pairs(t) do
       print("key:"..key..", value:"..value)
@@ -97,25 +121,25 @@ end
 local stream
 res = driver.open_stream(conn,"SELECT COUNT(*) as count, AVG(degree) as avg, MAX(degree) as max, MIN(degree) as min FROM thermometer interval(2s) sliding(2s);)",0,callback)
 if res.code ~=0 then
-   print("open stream error:"..res.error)
+   print("open stream--- failed:"..res.error)
    return
 else
-   print("openstream ok")
+   print("open stream--- pass")
    stream = res.stream
 end
 
---From now on we begin continous query in an definite (infinite if you want) loop.
+print("From now on we start continous insert in an definite (infinite if you want) loop.")
 local loop_index = 0
-while loop_index < 10 do
+while loop_index < 30 do
    local t = os.time()*1000
    local v = loop_index
    res = driver.query(conn,string.format("INSERT INTO therm1 VALUES (%d, %d)",t,v))
 
    if res.code ~=0 then
-      print(res.error)
+      print("continous insertion--- failed:" .. res.error)
       return
    else
-      print("insert successfully, affected:"..res.affected)
+      --print("insert successfully, affected:"..res.affected)
    end
    os.execute("sleep " .. 1)
    loop_index = loop_index + 1