diff --git a/src/logservice/leader_coordinator/table_accessor.cpp b/src/logservice/leader_coordinator/table_accessor.cpp
index 5d6130b857..fc1421c103 100644
--- a/src/logservice/leader_coordinator/table_accessor.cpp
+++ b/src/logservice/leader_coordinator/table_accessor.cpp
@@ -374,7 +374,7 @@ int LsElectionReferenceInfoRow::convert_table_info_to_user_info_()
         COORDINATOR_LOG_(WARN, "get ObAddr from ObString failed");
       } else {
         ObArray<ObStringHolder> split_by_comma;
-        if (!row_for_table_.element<4>().empty() && CLICK_FAIL(ObTableAccessHelper::split_string_by_char(row_for_table_.element<4>(), ',', split_by_comma))) {
+        if (!row_for_table_.element<4>().empty() && CLICK_FAIL(ObTableAccessHelper::split_string_by_char(row_for_table_.element<4>(), ';', split_by_comma))) {
           COORDINATOR_LOG_(WARN, "split blacklist by ',' failed");
         } else {
           for (int64_t idx = 0; idx < split_by_comma.count() && OB_SUCC(ret); ++idx) {
diff --git a/unittest/logservice/CMakeLists.txt b/unittest/logservice/CMakeLists.txt
index aa4d7f9371..57eb742986 100644
--- a/unittest/logservice/CMakeLists.txt
+++ b/unittest/logservice/CMakeLists.txt
@@ -23,6 +23,7 @@ ob_unittest(test_fixed_sliding_window)
 ob_unittest(test_ob_election)
 ob_unittest(test_ob_election_with_priority)
 ob_unittest(test_ob_election_message_compat)
+ob_unittest(test_ob_election_priority_seperate_blacklist)
 # ob_unittest(palf_performance_unittest)
 ob_unittest(test_ls_election_reference_info)
 ob_unittest(test_ob_tuple)
diff --git a/unittest/logservice/test_ob_election_priority_seperate_blacklist.cpp b/unittest/logservice/test_ob_election_priority_seperate_blacklist.cpp
new file mode 100644
index 0000000000..d8027163af
--- /dev/null
+++ b/unittest/logservice/test_ob_election_priority_seperate_blacklist.cpp
@@ -0,0 +1,85 @@
+// Copyright (c) 2021 OceanBase
+// OceanBase is licensed under Mulan PubL v2.
+// You can use this software according to the terms and conditions of the Mulan PubL v2.
+// You may obtain a copy of Mulan PubL v2 at:
+//          http://license.coscl.org.cn/MulanPubL-2.0
+// THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+// EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+// MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+// See the Mulan PubL v2 for more details.
+#include <gtest/gtest.h>
+#include <gmock/gmock.h>
+#define private public
+#define protected public
+#include "logservice/leader_coordinator/ob_failure_detector.h"
+#include "common/ob_role.h"
+#include "lib/list/ob_dlist.h"
+#include "logservice/leader_coordinator/failure_event.h"
+#include "logservice/palf/election/interface/election_msg_handler.h"
+#include <algorithm>
+#include <atomic>
+#include <chrono>
+#include "logservice/palf/election/interface/election.h"
+#include "logservice/palf/log_meta_info.h"
+#define UNITTEST
+#include "logservice/palf/election/utils/election_common_define.h"
+#include "logservice/palf/election/algorithm/election_impl.h"
+#include "logservice/leader_coordinator/election_priority_impl/election_priority_impl.h"
+#include "share/ob_occam_timer.h"
+#include "share/rc/ob_tenant_base.h"
+#include "mock_logservice_container/mock_election_user.h"
+#include <iostream>
+#include <vector>
+#include "logservice/leader_coordinator/table_accessor.h"
+
+using namespace std;
+
+#define SUCC_(stmt) ASSERT_EQ((stmt), OB_SUCCESS)
+#define FAIL_(stmt) ASSERT_EQ((stmt), OB_FAIL)
+#define TRUE_(stmt) ASSERT_EQ((stmt), true)
+#define FALSE_(stmt) ASSERT_EQ((stmt), false)
+
+namespace oceanbase
+{
+namespace unittest {
+
+class TestPrioritySeperateBlackList : public ::testing::Test {
+public:
+  TestPrioritySeperateBlackList() {}
+  ~TestPrioritySeperateBlackList() {}
+  virtual void SetUp() {}
+  virtual void TearDown() { }
+};
+
+TEST_F(TestPrioritySeperateBlackList, main)
+{
+  logservice::coordinator::LsElectionReferenceInfoRow row(1, share::ObLSID(1));
+  row.row_for_table_.element<0>() = 1;
+  row.row_for_table_.element<1>() = 1;
+  row.row_for_table_.element<2>().assign("z4,z5;z3;z2,z1");
+  row.row_for_table_.element<3>().assign("127.0.0.1:1080");
+  row.row_for_table_.element<4>().assign("127.0.0.1:1080(MIGRATE);127.0.0.1:1081(MIGRATE)");
+  row.convert_table_info_to_user_info_();
+  ASSERT_EQ(row.row_for_user_.element<4>().count(), 2);
+  ELECT_LOG(INFO, "print", K(row));
+}
+
+}
+}
+
+int main(int argc, char **argv)
+{
+  system("rm -rf test_ob_election_priority_seperate_blacklist.log");
+  oceanbase::palf::election::GLOBAL_INIT_ELECTION_MODULE();
+  oceanbase::unittest::MockNetService::init();
+  oceanbase::palf::election::INIT_TS = 0;
+  oceanbase::common::ObClockGenerator::init();
+  oceanbase::common::ObLogger &logger = oceanbase::common::ObLogger::get_logger();
+  oceanbase::share::ObTenantBase tenant_base(OB_SYS_TENANT_ID);
+  tenant_base.init();
+  oceanbase::share::ObTenantEnv::set_tenant(&tenant_base);
+  logger.set_file_name("test_ob_election_priority_seperate_blacklist.log", false);
+  logger.set_log_level(OB_LOG_LEVEL_INFO);
+  testing::InitGoogleTest(&argc, argv);
+  return RUN_ALL_TESTS();
+}