diff --git a/include/common/tgrant.h b/include/common/tgrant.h
index b707045bd1..fc1e45fb2a 100644
--- a/include/common/tgrant.h
+++ b/include/common/tgrant.h
@@ -29,6 +29,7 @@ extern "C" {
 #endif
 
 #define GRANT_HEART_BEAT_MIN 2
+#define GRANT_UNIQ_UNLIMITED (-1)
 #define GRANT_ACTIVE_CODE    "activeCode"
 #define GRANT_FLAG_ALL       (0x01)
 #define GRANT_FLAG_AUDIT     (0x02)
diff --git a/source/common/src/systable.c b/source/common/src/systable.c
index 6558df1fc1..35f2908968 100644
--- a/source/common/src/systable.c
+++ b/source/common/src/systable.c
@@ -85,7 +85,7 @@ static const SSysDbTableSchema clusterSchema[] = {
     {.name = "uptime", .bytes = 4, .type = TSDB_DATA_TYPE_INT, .sysInfo = true},
     {.name = "create_time", .bytes = 8, .type = TSDB_DATA_TYPE_TIMESTAMP, .sysInfo = true},
     {.name = "version", .bytes = 10 + VARSTR_HEADER_SIZE, .type = TSDB_DATA_TYPE_VARCHAR, .sysInfo = true},
-    {.name = "expire_time", .bytes = 8, .type = TSDB_DATA_TYPE_TIMESTAMP, .sysInfo = true},
+    {.name = "expire_time", .bytes = 19 + VARSTR_HEADER_SIZE, .type = TSDB_DATA_TYPE_VARCHAR, .sysInfo = true},
 };
 
 static const SSysDbTableSchema userDBSchema[] = {
diff --git a/source/dnode/mnode/impl/inc/mndInt.h b/source/dnode/mnode/impl/inc/mndInt.h
index 2da14c65d2..0c446182a6 100644
--- a/source/dnode/mnode/impl/inc/mndInt.h
+++ b/source/dnode/mnode/impl/inc/mndInt.h
@@ -100,7 +100,7 @@ typedef struct {
 } SSyncMgmt;
 
 typedef struct {
-  int64_t expireTimeMS;
+  int64_t expireTimeSec;
   int64_t timeseriesAllowed;
 } SGrantInfo;
 
diff --git a/source/dnode/mnode/impl/src/mndCluster.c b/source/dnode/mnode/impl/src/mndCluster.c
index f2b279276e..ca7544877c 100644
--- a/source/dnode/mnode/impl/src/mndCluster.c
+++ b/source/dnode/mnode/impl/src/mndCluster.c
@@ -310,11 +310,25 @@ static int32_t mndRetrieveClusters(SRpcMsg *pMsg, SShowObj *pShow, SSDataBlock *
     pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
     colDataSetVal(pColInfo, numOfRows, (const char *)ver, false);
 
-    pColInfo = taosArrayGet(pBlock->pDataBlock, cols++);
+    char expireTime[25] = {0};
+    pColInfo = taosArrayGet(pBlock->pDataBlock, cols);
     if (tsExpireTime <= 0) {
-      colDataSetNULL(pColInfo, numOfRows);
+      if (tsExpireTime == GRANT_UNIQ_UNLIMITED) {
+        STR_WITH_MAXSIZE_TO_VARSTR(expireTime, "unlimited", pShow->pMeta->pSchemas[cols].bytes);
+        colDataSetVal(pColInfo, numOfRows, expireTime, false);
+      } else {
+        colDataSetNULL(pColInfo, numOfRows);
+      }
     } else {
-      colDataSetVal(pColInfo, numOfRows, (const char *)&tsExpireTime, false);
+      char      ts[20] = {0};
+      struct tm ptm;
+      if (taosLocalTime(&tsExpireTime, &ptm, ts) != NULL) {
+        strftime(ts, 20, "%Y-%m-%d %H:%M:%S", &ptm);
+      } else {
+        ts[0] = 0;
+      }
+      STR_WITH_MAXSIZE_TO_VARSTR(expireTime, ts, pShow->pMeta->pSchemas[cols].bytes);
+      colDataSetVal(pColInfo, numOfRows, expireTime, false);
     }
 
     sdbRelease(pSdb, pCluster);
diff --git a/source/dnode/mnode/impl/src/mndMain.c b/source/dnode/mnode/impl/src/mndMain.c
index cad8c6d745..7c8ef2f0b7 100644
--- a/source/dnode/mnode/impl/src/mndMain.c
+++ b/source/dnode/mnode/impl/src/mndMain.c
@@ -1028,9 +1028,11 @@ int32_t mndGetMonitorInfo(SMnode *pMnode, SMonClusterInfo *pClusterInfo, SMonVgr
   }
 
   // grant info
-  pGrantInfo->expire_time = (pMnode->grant.expireTimeMS - ms) / 1000;
+  pGrantInfo->expire_time = pMnode->grant.expireTimeSec == GRANT_UNIQ_UNLIMITED
+                                ? GRANT_UNIQ_UNLIMITED
+                                : (pMnode->grant.expireTimeSec - ms / 1000);
   pGrantInfo->timeseries_total = pMnode->grant.timeseriesAllowed;
-  if (pMnode->grant.expireTimeMS == 0) {
+  if (pMnode->grant.expireTimeSec == 0) {
     pGrantInfo->expire_time = 0;
     pGrantInfo->timeseries_total = 0;
   }