diff --git a/be/src/olap/tablet_manager.cpp b/be/src/olap/tablet_manager.cpp
index 8ad683fe375049..d748ec1d804fe0 100644
--- a/be/src/olap/tablet_manager.cpp
+++ b/be/src/olap/tablet_manager.cpp
@@ -984,6 +984,7 @@ OLAPStatus TabletManager::build_all_report_tablets_info(std::map<TTabletId, TTab
         }
     }
     LOG(INFO) << "success to build all report tablets info. tablet_count=" << tablets_info->size();
+    DorisMetrics::instance()->tablet_total_num->set_value(tablets_info->size());
     return OLAP_SUCCESS;
 }
 
diff --git a/be/src/util/doris_metrics.cpp b/be/src/util/doris_metrics.cpp
index 4d267dafdc70f5..44730076c574bc 100644
--- a/be/src/util/doris_metrics.cpp
+++ b/be/src/util/doris_metrics.cpp
@@ -143,6 +143,8 @@ DEFINE_GAUGE_METRIC_PROTOTYPE_2ARG(tablet_base_max_compaction_score, MetricUnit:
 DEFINE_GAUGE_METRIC_PROTOTYPE_2ARG(compaction_used_permits, MetricUnit::NOUNIT);
 DEFINE_GAUGE_METRIC_PROTOTYPE_2ARG(compaction_waitting_permits, MetricUnit::NOUNIT);
 
+DEFINE_GAUGE_METRIC_PROTOTYPE_2ARG(tablet_total_num, MetricUnit::NOUNIT);
+
 DEFINE_GAUGE_CORE_METRIC_PROTOTYPE_2ARG(push_request_write_bytes_per_second, MetricUnit::BYTES);
 DEFINE_GAUGE_CORE_METRIC_PROTOTYPE_2ARG(query_scan_bytes_per_second, MetricUnit::BYTES);
 DEFINE_GAUGE_CORE_METRIC_PROTOTYPE_2ARG(max_disk_io_util_percent, MetricUnit::PERCENT);
@@ -250,6 +252,8 @@ DorisMetrics::DorisMetrics() : _metric_registry(_s_registry_name) {
     INT_GAUGE_METRIC_REGISTER(_server_metric_entity, compaction_used_permits);
     INT_GAUGE_METRIC_REGISTER(_server_metric_entity, compaction_waitting_permits);
 
+    INT_GAUGE_METRIC_REGISTER(_server_metric_entity, tablet_total_num);
+
     INT_GAUGE_METRIC_REGISTER(_server_metric_entity, push_request_write_bytes_per_second);
     INT_GAUGE_METRIC_REGISTER(_server_metric_entity, query_scan_bytes_per_second);
     INT_GAUGE_METRIC_REGISTER(_server_metric_entity, max_disk_io_util_percent);
diff --git a/be/src/util/doris_metrics.h b/be/src/util/doris_metrics.h
index 3a67bbcc65e9c9..91dee3f898daf4 100644
--- a/be/src/util/doris_metrics.h
+++ b/be/src/util/doris_metrics.h
@@ -137,6 +137,8 @@ class DorisMetrics {
     // permits required by the compaction task which is waitting for permits
     IntGauge* compaction_waitting_permits;
 
+    IntGauge* tablet_total_num;
+
     // The following metrics will be calculated
     // by metric calculator
     IntGauge* push_request_write_bytes_per_second;