diff --git a/src/rootserver/backup/ob_tenant_backup_data_clean_mgr.cpp b/src/rootserver/backup/ob_tenant_backup_data_clean_mgr.cpp
index 2abd9ded9cf9cb05a80564e708153c2f5485062c..8f914f80d5b10ed72f4ee0398efd3e7c893a142c 100644
--- a/src/rootserver/backup/ob_tenant_backup_data_clean_mgr.cpp
+++ b/src/rootserver/backup/ob_tenant_backup_data_clean_mgr.cpp
@@ -1909,8 +1909,10 @@ int ObTenantBackupClogDataCleanTask::generate_backup_piece_pg_tasks(
     int hash_ret = sys_tenant_deleted_backup_piece.exist_refactored(simple_piece_key);
     if (OB_HASH_EXIST == hash_ret) {
       delete_clog_mode.mode_ = ObBackupDeleteClogMode::DELETE_BACKUP_PIECE;
+      LOG_INFO("backup piece will be deleted", K(simple_piece_key));
     } else if (OB_HASH_NOT_EXIST == hash_ret) {
       delete_clog_mode.mode_ = ObBackupDeleteClogMode::NONE;
+      LOG_INFO("backup piece will not be deleted", K(simple_piece_key));
     } else {
       ret = OB_SUCCESS == hash_ret ? OB_ERR_UNEXPECTED : hash_ret;
       LOG_WARN("failed to check backup piece exist", K(ret), K(hash_ret), K(simple_piece_key));
diff --git a/src/rootserver/ob_backup_data_clean.cpp b/src/rootserver/ob_backup_data_clean.cpp
index 999c104c239a5e648ea64f93f610a8e2a4791cd0..b63a0eead77fee2930e4185f6a0c3120c3529150 100644
--- a/src/rootserver/ob_backup_data_clean.cpp
+++ b/src/rootserver/ob_backup_data_clean.cpp
@@ -3017,19 +3017,8 @@ int ObBackupDataClean::get_need_delete_clog_round_and_piece(const share::ObBacku
     ret = OB_NOT_INIT;
     LOG_WARN("backup data clean do not init", K(ret));
   } else if (clean_info.is_delete_backup_piece()) {
-    ObBackupPieceInfoKey piece_key;
-    if (clean_element.log_archive_round_array_.empty() || clean_element.log_archive_round_array_.count() > 1) {
-      ret = OB_ERR_UNEXPECTED;
-      LOG_WARN("delete backup piece get unexpected round infos", K(ret), K(clean_element));
-    } else {
-      piece_key.backup_piece_id_ = clean_info.backup_piece_id_;
-      piece_key.copy_id_ = clean_element.log_archive_round_array_.at(0).copy_id_;
-      piece_key.incarnation_ = clean_element.incarnation_;
-      piece_key.round_id_ = clean_element.log_archive_round_array_.at(0).log_archive_round_;
-      piece_key.tenant_id_ = clean_info.tenant_id_;
-      if (OB_FAIL(backup_piece_keys.push_back(piece_key))) {
-        LOG_WARN("failed to push backup piece key into array", K(ret), K(piece_key));
-      }
+    if (OB_FAIL(get_tenant_delete_piece(clean_info, clean_element, backup_piece_keys))) {
+      LOG_WARN("failed to get tenant delete piece", K(ret), K(clean_info), K(clean_element));
     }
   } else if (OB_SYS_TENANT_ID == clean_info.tenant_id_) {
     if (OB_FAIL(get_sys_tenant_delete_clog_round_and_piece(
@@ -6862,6 +6851,45 @@ int ObBackupDataClean::remove_delete_expired_data_snapshot_(const ObSimpleBackup
   return ret;
 }
 
+int ObBackupDataClean::get_tenant_delete_piece(const share::ObBackupCleanInfo &clean_info,
+    const ObBackupDataCleanElement &clean_element, common::ObIArray<ObBackupPieceInfoKey> &backup_piece_keys)
+{
+  int ret = OB_SUCCESS;
+  ObBackupPieceInfoKey piece_key;
+
+  if (!is_inited_) {
+    ret = OB_NOT_INIT;
+    LOG_WARN("backup data clean do not init", K(ret));
+  } else if (clean_element.log_archive_round_array_.empty() || clean_element.log_archive_round_array_.count() > 1) {
+    ret = OB_ERR_UNEXPECTED;
+    LOG_WARN("delete backup piece get unexpected round infos", K(ret), K(clean_element));
+  } else {
+    piece_key.backup_piece_id_ = clean_info.backup_piece_id_;
+    piece_key.copy_id_ = clean_element.log_archive_round_array_.at(0).copy_id_;
+    piece_key.incarnation_ = clean_element.incarnation_;
+    piece_key.round_id_ = clean_element.log_archive_round_array_.at(0).log_archive_round_;
+    piece_key.tenant_id_ = clean_info.tenant_id_;
+    if (OB_FAIL(backup_piece_keys.push_back(piece_key))) {
+      LOG_WARN("failed to push backup piece key into array", K(ret), K(piece_key));
+    }
+
+    if (OB_SUCC(ret)) {
+      if (OB_SYS_TENANT_ID == clean_info.tenant_id_) {
+        const bool overwrite_key = true;
+        ObSimplePieceKey simple_piece_key;
+        simple_piece_key.backup_piece_id_ = piece_key.backup_piece_id_;
+        simple_piece_key.copy_id_ = piece_key.copy_id_;
+        simple_piece_key.incarnation_ = piece_key.incarnation_;
+        simple_piece_key.round_id_ = piece_key.round_id_;
+        if (OB_FAIL(sys_tenant_deleted_backup_piece_.set_refactored_1(simple_piece_key, overwrite_key))) {
+          LOG_WARN("failed to set simple piece key", K(ret), K(simple_piece_key), K(piece_key));
+        }
+      }
+    }
+  }
+  return ret;
+}
+
 int ObBackupDataClean::set_comment(ObBackupCleanInfo::Comment &comment)
 {
   int ret = OB_SUCCESS;
diff --git a/src/rootserver/ob_backup_data_clean.h b/src/rootserver/ob_backup_data_clean.h
index 6916d261f75efdb9f45ebc7fa5e1b67b13cc247e..b8f78a6d451377497d6376c0835a5057a0107d7b 100644
--- a/src/rootserver/ob_backup_data_clean.h
+++ b/src/rootserver/ob_backup_data_clean.h
@@ -220,6 +220,8 @@ private:
       const ObBackupDataCleanElement &clean_element,
       common::ObIArray<ObLogArchiveRound> &log_archive_rounds,
       common::ObIArray<ObBackupPieceInfoKey> &backup_piece_keys);
+  int get_tenant_delete_piece(const share::ObBackupCleanInfo &clean_info, const ObBackupDataCleanElement &clean_element,
+      common::ObIArray<ObBackupPieceInfoKey> &backup_piece_keys);
 
   int delete_tenant_backup_meta_data(
       const share::ObBackupCleanInfo &clean_info, const ObBackupDataCleanTenant &clean_tenant);