diff --git a/src/cm_adapter/cm_sharediskapi/cm_voting_disk.cpp b/src/cm_adapter/cm_sharediskapi/cm_voting_disk.cpp
index d3f8545..cb85c97 100644
--- a/src/cm_adapter/cm_sharediskapi/cm_voting_disk.cpp
+++ b/src/cm_adapter/cm_sharediskapi/cm_voting_disk.cpp
@@ -112,14 +112,14 @@ status_t SetVotingDiskNodeData(char *data, uint32 dataLen)
     return CM_SUCCESS;
 }
 
-status_t UpdateAllNodeHeartBeat()
+status_t UpdateAllNodeHeartBeat(uint32 nodeNum)
 {
-    uint32 dataLen = VOTING_DISK_DATA_SIZE;
+    uint32 dataLen = nodeNum * VOTING_DISK_EACH_NODE_OFFSET;
     if (GetVotingDiskNodeData(g_nodeDataBuff, dataLen) != CM_SUCCESS) {
         write_runlog(ERROR, "[%s] get voting disk node data failed.\n", __FUNCTION__);
         return CM_ERROR;
     }
-    for (uint32 i = 0; i < VOTING_DISK_MAX_NODE_NUM; i++) {
+    for (uint32 i = 0; i < nodeNum; i++) {
         uint32 offset = i * VOTING_DISK_EACH_NODE_OFFSET;
         VotingDiskNodeInfo *nodeInfo = (VotingDiskNodeInfo*)(g_nodeDataBuff + offset);
         if (nodeInfo->nodeTime == 0) {
diff --git a/src/cm_server/cms_arbitrate_cluster.cpp b/src/cm_server/cms_arbitrate_cluster.cpp
index 976cc22..de23564 100644
--- a/src/cm_server/cms_arbitrate_cluster.cpp
+++ b/src/cm_server/cms_arbitrate_cluster.cpp
@@ -1005,7 +1005,7 @@ static status_t CheckVotingDisk()
     const uint32 timeout = 6;
     uint32 time = timeout;
     while (time > 0) {
-        if (UpdateAllNodeHeartBeat() == CM_SUCCESS) {
+        if (UpdateAllNodeHeartBeat(g_node_num) == CM_SUCCESS) {
             return CM_SUCCESS;
         }
         time--;
diff --git a/src/include/cm/cm_adapter/cm_sharedisk/cm_voting_disk.h b/src/include/cm/cm_adapter/cm_sharedisk/cm_voting_disk.h
index c32816c..eb2be21 100644
--- a/src/include/cm/cm_adapter/cm_sharedisk/cm_voting_disk.h
+++ b/src/include/cm/cm_adapter/cm_sharedisk/cm_voting_disk.h
@@ -42,7 +42,7 @@ status_t GetVotingDiskData(char *data, uint32 dataLen, uint32 offset);
 status_t GetVotingDiskSingleNodeInfo(VotingDiskNodeInfo *nodeInfo, uint32 nodeIndex);
 status_t InitVotingDiskHandler(const char *scsiDev, uint32 offset);
 status_t InitVotingDisk(const char *votingDiskPath);
-status_t UpdateAllNodeHeartBeat();
+status_t UpdateAllNodeHeartBeat(uint32 nodeNum);
 void ResetVotingdiskHeartBeat();
 VotingDiskStatus GetNodeHeartbeatStat(uint32 nodeIndex, uint32 diskTimeout, int logLevel);
 status_t AllocVotingDiskMem();