diff --git a/src/client/src/tscSystem.c b/src/client/src/tscSystem.c
index ae47adc36e95bec19e8684bf1ef4a2c19b2b4f94..7811f39e33529476d361881f4291189530e4c510 100644
--- a/src/client/src/tscSystem.c
+++ b/src/client/src/tscSystem.c
@@ -443,7 +443,7 @@ static int taos_set_config_imp(const char *config){
   static bool setConfFlag = false;
   if (setConfFlag) {
     tscError("already set config");
-    return -1;
+    return 0;
   }
   cJSON *root = cJSON_Parse(config);
   if (root == NULL) {
@@ -451,18 +451,22 @@ static int taos_set_config_imp(const char *config){
     return -1;
   }
 
+  int ret = 0;
   int size = cJSON_GetArraySize(root);
   for(int i = 0; i < size; i++){
     cJSON *item = cJSON_GetArrayItem(root, i);
     if (!item) {
       tscError("failed to read index:%d", i);
+      ret = -2;
       continue;
     }
-    taosReadConfigOption(item->string, item->valuestring, NULL, NULL);
+    if(!taosReadConfigOption(item->string, item->valuestring, NULL, NULL)){
+      ret = -2;
+    }
   }
   taosPrintGlobalCfg();
   setConfFlag = true;
-  return 0;
+  return ret;
 }
 
 int taos_set_config(const char *config){
diff --git a/src/util/inc/tconfig.h b/src/util/inc/tconfig.h
index 3b90bd22b411c8b9d57412cc77415110191b8e24..3c5cdfe08c0a0411d968bb8211cc0d2e691706ec 100644
--- a/src/util/inc/tconfig.h
+++ b/src/util/inc/tconfig.h
@@ -89,7 +89,7 @@ void taosDumpGlobalCfg();
 
 void taosInitConfigOption(SGlobalCfg cfg);
 SGlobalCfg * taosGetConfigOption(const char *option);
-void taosReadConfigOption(const char *option, char *value, char *value2, char *value3);
+bool taosReadConfigOption(const char *option, char *value, char *value2, char *value3);
 
 #ifdef __cplusplus
 }
diff --git a/src/util/src/tconfig.c b/src/util/src/tconfig.c
index 8923bdeddfbf08773cc02eaccb1f31a013112708..548b3bc4f5aed921ee50cd3ed3629b5b7916f8a9 100644
--- a/src/util/src/tconfig.c
+++ b/src/util/src/tconfig.c
@@ -26,6 +26,11 @@
 SGlobalCfg tsGlobalConfig[TSDB_CFG_MAX_NUM] = {{0}};
 int32_t    tsGlobalConfigNum = 0;
 
+#define ATOI_JUDGE if ( !value && strcmp(input_value, "0") != 0) { \
+                      uError("atoi error, input value:%s",input_value); \
+                      return false; \
+                    }
+
 static char *tsGlobalUnit[] = {
   " ", 
   "(%)", 
@@ -44,12 +49,14 @@ char *tsCfgStatusStr[] = {
   "program argument list"
 };
 
-static void taosReadFloatConfig(SGlobalCfg *cfg, char *input_value) {
+static bool taosReadFloatConfig(SGlobalCfg *cfg, char *input_value) {
   float  value = (float)atof(input_value);
+  ATOI_JUDGE
   float *option = (float *)cfg->ptr;
   if (value < cfg->minValue || value > cfg->maxValue) {
     uError("config option:%s, input value:%s, out of range[%f, %f], use default value:%f",
            cfg->option, input_value, cfg->minValue, cfg->maxValue, *option);
+    return false;
   } else {
     if (cfg->cfgStatus <= TAOS_CFG_CSTATUS_FILE) {
       *option = value;
@@ -57,16 +64,20 @@ static void taosReadFloatConfig(SGlobalCfg *cfg, char *input_value) {
     } else {
       uWarn("config option:%s, input value:%s, is configured by %s, use %f", cfg->option, input_value,
             tsCfgStatusStr[cfg->cfgStatus], *option);
+      return false;
     }
   }
+  return true;
 }
 
-static void taosReadDoubleConfig(SGlobalCfg *cfg, char *input_value) {
+static bool taosReadDoubleConfig(SGlobalCfg *cfg, char *input_value) {
   double  value = atof(input_value);
+  ATOI_JUDGE
   double *option = (double *)cfg->ptr;
   if (value < cfg->minValue || value > cfg->maxValue) {
     uError("config option:%s, input value:%s, out of range[%f, %f], use default value:%f",
            cfg->option, input_value, cfg->minValue, cfg->maxValue, *option);
+    return false;
   } else {
     if (cfg->cfgStatus <= TAOS_CFG_CSTATUS_FILE) {
       *option = value;
@@ -74,17 +85,21 @@ static void taosReadDoubleConfig(SGlobalCfg *cfg, char *input_value) {
     } else {
       uWarn("config option:%s, input value:%s, is configured by %s, use %f", cfg->option, input_value,
             tsCfgStatusStr[cfg->cfgStatus], *option);
+      return false;
     }
   }
+  return true;
 }
 
 
-static void taosReadInt32Config(SGlobalCfg *cfg, char *input_value) {
+static bool taosReadInt32Config(SGlobalCfg *cfg, char *input_value) {
   int32_t  value = atoi(input_value);
+  ATOI_JUDGE
   int32_t *option = (int32_t *)cfg->ptr;
   if (value < cfg->minValue || value > cfg->maxValue) {
     uError("config option:%s, input value:%s, out of range[%f, %f], use default value:%d",
            cfg->option, input_value, cfg->minValue, cfg->maxValue, *option);
+    return false;
   } else {
     if (cfg->cfgStatus <= TAOS_CFG_CSTATUS_FILE) {
       *option = value;
@@ -92,16 +107,20 @@ static void taosReadInt32Config(SGlobalCfg *cfg, char *input_value) {
     } else {
       uWarn("config option:%s, input value:%s, is configured by %s, use %d", cfg->option, input_value,
             tsCfgStatusStr[cfg->cfgStatus], *option);
+      return false;
     }
   }
+  return true;
 }
 
-static void taosReadInt16Config(SGlobalCfg *cfg, char *input_value) {
+static bool taosReadInt16Config(SGlobalCfg *cfg, char *input_value) {
   int32_t  value = atoi(input_value);
+  ATOI_JUDGE
   int16_t *option = (int16_t *)cfg->ptr;
   if (value < cfg->minValue || value > cfg->maxValue) {
     uError("config option:%s, input value:%s, out of range[%f, %f], use default value:%d",
            cfg->option, input_value, cfg->minValue, cfg->maxValue, *option);
+    return false;
   } else {
     if (cfg->cfgStatus <= TAOS_CFG_CSTATUS_FILE) {
       *option = (int16_t)value;
@@ -109,16 +128,20 @@ static void taosReadInt16Config(SGlobalCfg *cfg, char *input_value) {
     } else {
       uWarn("config option:%s, input value:%s, is configured by %s, use %d", cfg->option, input_value,
             tsCfgStatusStr[cfg->cfgStatus], *option);
+      return false;
     }
   }
+  return true;
 }
 
-static void taosReadUInt16Config(SGlobalCfg *cfg, char *input_value) {
+static bool taosReadUInt16Config(SGlobalCfg *cfg, char *input_value) {
   int32_t  value = atoi(input_value);
+  ATOI_JUDGE
   uint16_t *option = (uint16_t *)cfg->ptr;
   if (value < cfg->minValue || value > cfg->maxValue) {
     uError("config option:%s, input value:%s, out of range[%f, %f], use default value:%d",
            cfg->option, input_value, cfg->minValue, cfg->maxValue, *option);
+    return false;
   } else {
     if (cfg->cfgStatus <= TAOS_CFG_CSTATUS_FILE) {
       *option = (uint16_t)value;
@@ -126,16 +149,20 @@ static void taosReadUInt16Config(SGlobalCfg *cfg, char *input_value) {
     } else {
       uWarn("config option:%s, input value:%s, is configured by %s, use %d", cfg->option, input_value,
             tsCfgStatusStr[cfg->cfgStatus], *option);
+      return false;
     }
   }
+  return true;
 }
 
-static void taosReadInt8Config(SGlobalCfg *cfg, char *input_value) {
+static bool taosReadInt8Config(SGlobalCfg *cfg, char *input_value) {
   int32_t  value = atoi(input_value);
+  ATOI_JUDGE
   int8_t *option = (int8_t *)cfg->ptr;
   if (value < cfg->minValue || value > cfg->maxValue) {
     uError("config option:%s, input value:%s, out of range[%f, %f], use default value:%d",
            cfg->option, input_value, cfg->minValue, cfg->maxValue, *option);
+    return false;
   } else {
     if (cfg->cfgStatus <= TAOS_CFG_CSTATUS_FILE) {
       *option = (int8_t)value;
@@ -143,8 +170,10 @@ static void taosReadInt8Config(SGlobalCfg *cfg, char *input_value) {
     } else {
       uWarn("config option:%s, input value:%s, is configured by %s, use %d", cfg->option, input_value,
             tsCfgStatusStr[cfg->cfgStatus], *option);
+      return false;
     }
   }
+  return true;
 }
 
 static bool taosReadDirectoryConfig(SGlobalCfg *cfg, char *input_value) {
@@ -191,12 +220,13 @@ static bool taosReadDirectoryConfig(SGlobalCfg *cfg, char *input_value) {
   return true;
 }
 
-static void taosReadIpStrConfig(SGlobalCfg *cfg, char *input_value) {
+static bool taosReadIpStrConfig(SGlobalCfg *cfg, char *input_value) {
   uint32_t value = taosInetAddr(input_value);
   char *   option = (char *)cfg->ptr;
   if (value == INADDR_NONE) {
     uError("config option:%s, input value:%s, is not a valid ip address, use default value:%s",
            cfg->option, input_value, option);
+    return false;
   } else {
     if (cfg->cfgStatus <= TAOS_CFG_CSTATUS_FILE) {
       strncpy(option, input_value, cfg->ptrLength);
@@ -204,16 +234,19 @@ static void taosReadIpStrConfig(SGlobalCfg *cfg, char *input_value) {
     } else {
       uWarn("config option:%s, input value:%s, is configured by %s, use %s", cfg->option, input_value,
             tsCfgStatusStr[cfg->cfgStatus], option);
+      return false;
     }
   }
+  return true;
 }
 
-static void taosReadStringConfig(SGlobalCfg *cfg, char *input_value) {
+static bool taosReadStringConfig(SGlobalCfg *cfg, char *input_value) {
   int   length = (int) strlen(input_value);
   char *option = (char *)cfg->ptr;
   if (length <= 0 || length > cfg->ptrLength) {
     uError("config option:%s, input value:%s, length out of range[0, %d], use default value:%s",
            cfg->option, input_value, cfg->ptrLength, option);
+    return false;
   } else {
     if (cfg->cfgStatus <= TAOS_CFG_CSTATUS_FILE) {
       strncpy(option, input_value, cfg->ptrLength);
@@ -221,8 +254,10 @@ static void taosReadStringConfig(SGlobalCfg *cfg, char *input_value) {
     } else {
       uWarn("config option:%s, input value:%s, is configured by %s, use %s", cfg->option, input_value,
             tsCfgStatusStr[cfg->cfgStatus], option);
+      return false;
     }
   }
+  return true;
 }
 
 static void taosReadLogOption(char *option, char *value) {
@@ -258,7 +293,7 @@ SGlobalCfg *taosGetConfigOption(const char *option) {
   return NULL;
 }
 
-void taosReadConfigOption(const char *option, char *value, char *value2, char *value3) {
+bool taosReadConfigOption(const char *option, char *value, char *value2, char *value3) {
   for (int i = 0; i < tsGlobalConfigNum; ++i) {
     SGlobalCfg *cfg = tsGlobalConfig + i;
     if (!(cfg->cfgType & TSDB_CFG_CTYPE_B_CONFIG)) continue;
@@ -266,43 +301,35 @@ void taosReadConfigOption(const char *option, char *value, char *value2, char *v
 
     switch (cfg->valType) {
       case TAOS_CFG_VTYPE_INT8:
-        taosReadInt8Config(cfg, value);
-        break;
+        return taosReadInt8Config(cfg, value);
       case TAOS_CFG_VTYPE_INT16:
-        taosReadInt16Config(cfg, value);
-        break;
+        return taosReadInt16Config(cfg, value);
       case TAOS_CFG_VTYPE_INT32:
-        taosReadInt32Config(cfg, value);
-        break;
+        return taosReadInt32Config(cfg, value);
       case TAOS_CFG_VTYPE_UINT16:
-        taosReadUInt16Config(cfg, value);
-        break;
+        return taosReadUInt16Config(cfg, value);
       case TAOS_CFG_VTYPE_FLOAT:
-        taosReadFloatConfig(cfg, value);
-        break;
+        return taosReadFloatConfig(cfg, value);
       case TAOS_CFG_VTYPE_DOUBLE:
-        taosReadDoubleConfig(cfg, value);
-        break;
+        return taosReadDoubleConfig(cfg, value);
       case TAOS_CFG_VTYPE_STRING:
-        taosReadStringConfig(cfg, value);
-        break;
+        return taosReadStringConfig(cfg, value);
       case TAOS_CFG_VTYPE_IPSTR:
-        taosReadIpStrConfig(cfg, value);
-        break;
+        return taosReadIpStrConfig(cfg, value);
       case TAOS_CFG_VTYPE_DIRECTORY:
-        taosReadDirectoryConfig(cfg, value);
-        break;
+        return taosReadDirectoryConfig(cfg, value);
       case TAOS_CFG_VTYPE_DATA_DIRCTORY:
         if (taosReadDirectoryConfig(cfg, value)) {
-          taosReadDataDirCfg(value, value2, value3);
+           taosReadDataDirCfg(value, value2, value3);
+           return true;
         }
-        break;
+        return false;
       default:
         uError("config option:%s, input value:%s, can't be recognized", option, value);
-        break;
+        return false;
     }
-    break;
   }
+  return false;
 }
 
 void taosInitConfigOption(SGlobalCfg cfg) {