diff --git a/src/cm_common/cm_misc.cpp b/src/cm_common/cm_misc.cpp
index e0f90c0..14e89e5 100644
--- a/src/cm_common/cm_misc.cpp
+++ b/src/cm_common/cm_misc.cpp
@@ -1322,25 +1322,12 @@ status_t IsReachableIP(char *ip)
     if (ip == nullptr) {
         return CM_ERROR;
     }
-    char tmpIp[CM_IP_LENGTH];
-    int rc = -1;
-    rc = strcpy_s(tmpIp, CM_IP_LENGTH, ip);
-    securec_check_errno(rc, (void)rc);
-    char *saveptr = NULL;
-    char *token = strtok_r(tmpIp, ",", &saveptr);
+
     char cmd[MAXPGPATH] = {0};
-    while (token != NULL) {
-        rc = memset_s(cmd, MAXPGPATH, 0, MAXPGPATH);
-        securec_check_errno(rc, (void)rc);
-        rc = snprintf_s(cmd, MAXPGPATH, MAXPGPATH - 1, "timeout 2 ping -c 2 %s > /dev/null 2>&1", token);
-        securec_check_intval(rc, (void)rc);
-        rc = system(cmd);
-        if (rc == 0) {
-            return CM_SUCCESS;
-        }
-        token = strtok_r(NULL, ",", &saveptr);
-    }
-    return CM_ERROR;
+    int rc = snprintf_s(cmd, MAXPGPATH, MAXPGPATH - 1, "timeout 2 ping -c 2 %s > /dev/null 2>&1", ip);
+    securec_check_intval(rc, (void)rc);
+    rc = system(cmd);
+    return rc == 0 ? CM_SUCCESS : CM_ERROR;
 }
 
 bool IsIPAddrValid(const char *ipAddr)
diff --git a/src/cm_server/cms_monitor_main.cpp b/src/cm_server/cms_monitor_main.cpp
index ca8a851..a3d6ae5 100644
--- a/src/cm_server/cms_monitor_main.cpp
+++ b/src/cm_server/cms_monitor_main.cpp
@@ -1047,15 +1047,52 @@ static inline void DdbSetDdbWorkMode(ddb_work_mode workMode, unsigned int voteNu
     }
 }
 
+/*
+    if reachale is true:
+            all ip is reachable, return CM_SUCCESS
+            else return CM_ERROR
+    if reachale is false:
+            all ip is not reachable, return CM_SUCCESS
+            else return CM_ERROR
+*/
+static status_t CheckAllIpStatus(char *ip, bool reachable) {
+    if (ip == nullptr) {
+        return CM_ERROR;
+    }
+
+    char tmpIp[CM_IP_LENGTH];
+    int rc = -1;
+    rc = strcpy_s(tmpIp, CM_IP_LENGTH, ip);
+    securec_check_errno(rc, (void)rc);
+    char *saveptr = NULL;
+    char *token = strtok_r(tmpIp, ",", &saveptr);
+    status_t ret = CM_SUCCESS;
+    bool flag = false;
+    while (token != NULL) {
+        if (reachable && IsReachableIP(token) != CM_SUCCESS) {
+            ret = CM_ERROR;
+            break;
+        }
+        else if (!reachable && IsReachableIP(token) == CM_SUCCESS) {
+            ret = CM_ERROR;
+            break;
+        }
+        flag = true;
+        token = strtok_r(NULL, ",", &saveptr);
+    }
+
+    return flag ? ret : CM_ERROR;
+}
+
 static void DdbMinorityWorkModeSetInMajority()
 {
     uint32 minVoteNum = 1;
-    if (IsReachableIP(g_paramsOn2Nodes.thirdPartyGatewayIp) == CM_SUCCESS) {
-        // third party gateway is reachable, setting a small vote num to make sure current node works as primary.
+    if (CheckAllIpStatus(g_paramsOn2Nodes.thirdPartyGatewayIp, true) == CM_SUCCESS) {
+        // all third party gateway is reachable, setting a small vote num to make sure current node works as primary.
         write_runlog(LOG, "promote node to primary\n");
         DdbSetDdbWorkMode(DDB_WORK_MODE_MINORITY, minVoteNum, 0);
     } else {
-        // third party gateway is not reachable, setting a big vote num to make sure current node works as standby.
+        // not all third party gateway is reachable, setting a big vote num to make sure current node works as standby.
         minVoteNum += MAX_VOTE_NUM;
         DdbSetDdbWorkMode(DDB_WORK_MODE_MINORITY, minVoteNum, 1);
 
@@ -1079,10 +1116,11 @@ static void DdbMinorityWorkModeSetInMajority()
 static void DdbMinorityWorkModeSetInMinority()
 {
     uint32 minVoteNum = 1;
-    if (IsReachableIP(g_paramsOn2Nodes.thirdPartyGatewayIp) == CM_SUCCESS && g_bigVoteNumInMinorityMode == 1) {
+    if (CheckAllIpStatus(g_paramsOn2Nodes.thirdPartyGatewayIp, true) == CM_SUCCESS && g_bigVoteNumInMinorityMode == 1) {
         write_runlog(LOG, "reset minority work mode and become primary.\n");
         DdbSetDdbWorkMode(DDB_WORK_MODE_MINORITY, minVoteNum, 0);
-    } else if (IsReachableIP(g_paramsOn2Nodes.thirdPartyGatewayIp) != CM_SUCCESS && g_bigVoteNumInMinorityMode == 0) {
+    } else if (CheckAllIpStatus(g_paramsOn2Nodes.thirdPartyGatewayIp, false) == CM_SUCCESS && g_bigVoteNumInMinorityMode == 0) {
+        // every third party gateway is not reachable, setting a big vote num to make sure current node works as standby.
         minVoteNum += MAX_VOTE_NUM;
         write_runlog(LOG, "reset minority work mode and become standby.\n");
         DdbSetDdbWorkMode(DDB_WORK_MODE_MINORITY, minVoteNum, 1);
@@ -1099,7 +1137,7 @@ static void DdbMinorityWorkModeSetInMinority()
 static void DdbMinorityWorkModeSetInStartup()
 {
     uint32 minVoteNum = 1;
-    if (IsReachableIP(g_paramsOn2Nodes.thirdPartyGatewayIp) == CM_SUCCESS) {
+    if (CheckAllIpStatus(g_paramsOn2Nodes.thirdPartyGatewayIp, true) == CM_SUCCESS) {
         write_runlog(LOG, "start up with minority work mode and minVoteNum: %d.\n", minVoteNum);
         DdbSetDdbWorkMode(DDB_WORK_MODE_MINORITY, minVoteNum, 0);
     } else {