diff --git a/dolphinscheduler-dao/src/main/resources/sql/dolphinscheduler_mysql.sql b/dolphinscheduler-dao/src/main/resources/sql/dolphinscheduler_mysql.sql
index d70c6b8dad..cde9a556a7 100644
--- a/dolphinscheduler-dao/src/main/resources/sql/dolphinscheduler_mysql.sql
+++ b/dolphinscheduler-dao/src/main/resources/sql/dolphinscheduler_mysql.sql
@@ -539,7 +539,9 @@ CREATE TABLE `t_ds_process_task_relation` (
   `create_time` datetime NOT NULL COMMENT 'create time',
   `update_time` datetime NOT NULL COMMENT 'update time',
   PRIMARY KEY (`id`),
-  KEY `idx_code` (`project_code`,`process_definition_code`)
+  KEY `idx_code` (`project_code`,`process_definition_code`),
+  KEY `idx_pre_task_code_version` (`pre_task_code`,`pre_task_version`),
+  KEY `idx_post_task_code_version` (`post_task_code`,`post_task_version`)
 ) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;
 
 -- ----------------------------
diff --git a/dolphinscheduler-dao/src/main/resources/sql/dolphinscheduler_postgresql.sql b/dolphinscheduler-dao/src/main/resources/sql/dolphinscheduler_postgresql.sql
index 225e3c4831..a0329b708c 100644
--- a/dolphinscheduler-dao/src/main/resources/sql/dolphinscheduler_postgresql.sql
+++ b/dolphinscheduler-dao/src/main/resources/sql/dolphinscheduler_postgresql.sql
@@ -462,6 +462,8 @@ CREATE TABLE t_ds_process_task_relation (
 ) ;
 
 create index process_task_relation_idx_project_code_process_definition_code on t_ds_process_task_relation (project_code,process_definition_code);
+create index process_task_relation_idx_pre_task_code_version on t_ds_process_task_relation (pre_task_code, pre_task_version);
+create index process_task_relation_idx_post_task_code_version on t_ds_process_task_relation (post_task_code, post_task_version);
 
 --
 -- Table structure for table t_ds_process_task_relation_log
diff --git a/dolphinscheduler-dao/src/main/resources/sql/upgrade/2.1.0_schema/mysql/dolphinscheduler_ddl.sql b/dolphinscheduler-dao/src/main/resources/sql/upgrade/2.1.0_schema/mysql/dolphinscheduler_ddl.sql
index 07237157a8..b33b580ded 100644
--- a/dolphinscheduler-dao/src/main/resources/sql/upgrade/2.1.0_schema/mysql/dolphinscheduler_ddl.sql
+++ b/dolphinscheduler-dao/src/main/resources/sql/upgrade/2.1.0_schema/mysql/dolphinscheduler_ddl.sql
@@ -18,6 +18,8 @@
 ALTER TABLE `t_ds_task_instance` ADD INDEX `idx_code_version` (`task_code`, `task_definition_version`) USING BTREE;
 ALTER TABLE `t_ds_task_instance` MODIFY COLUMN `task_params` longtext COMMENT 'job custom parameters' AFTER `app_link`;
 ALTER TABLE `t_ds_process_task_relation` ADD KEY `idx_code` (`project_code`, `process_definition_code`) USING BTREE;
+ALTER TABLE `t_ds_process_task_relation` ADD KEY `idx_pre_task_code_version` (`pre_task_code`,`pre_task_version`);
+ALTER TABLE `t_ds_process_task_relation` ADD KEY `idx_post_task_code_version` (`post_task_code`,`post_task_version`);
 ALTER TABLE `t_ds_process_task_relation_log` ADD KEY `idx_process_code_version` (`process_definition_code`,`process_definition_version`) USING BTREE;
 
 ALTER TABLE `t_ds_task_definition_log` ADD INDEX `idx_project_code` (`project_code`) USING BTREE;
diff --git a/dolphinscheduler-dao/src/main/resources/sql/upgrade/2.1.0_schema/postgresql/dolphinscheduler_ddl.sql b/dolphinscheduler-dao/src/main/resources/sql/upgrade/2.1.0_schema/postgresql/dolphinscheduler_ddl.sql
index fc30b0fea1..1943262384 100644
--- a/dolphinscheduler-dao/src/main/resources/sql/upgrade/2.1.0_schema/postgresql/dolphinscheduler_ddl.sql
+++ b/dolphinscheduler-dao/src/main/resources/sql/upgrade/2.1.0_schema/postgresql/dolphinscheduler_ddl.sql
@@ -32,6 +32,12 @@ BEGIN
 EXECUTE 'DROP INDEX IF EXISTS "process_task_relation_idx_project_code_process_definition_code"';
 EXECUTE 'CREATE INDEX IF NOT EXISTS process_task_relation_idx_project_code_process_definition_code ON ' || quote_ident(v_schema) ||'.t_ds_process_task_relation USING Btree("project_code","process_definition_code")';
 
+EXECUTE 'DROP INDEX IF EXISTS "process_task_relation_idx_pre_task_code_version"';
+EXECUTE 'CREATE INDEX IF NOT EXISTS process_task_relation_idx_pre_task_code_version ON ' || quote_ident(v_schema) ||'.t_ds_process_task_relation USING Btree("pre_task_code","pre_task_version")';
+
+EXECUTE 'DROP INDEX IF EXISTS "process_task_relation_idx_post_task_code_version"';
+EXECUTE 'CREATE INDEX IF NOT EXISTS process_task_relation_idx_post_task_code_version ON ' || quote_ident(v_schema) ||'.t_ds_process_task_relation USING Btree("post_task_code","post_task_version")';
+
 EXECUTE 'DROP INDEX IF EXISTS "process_task_relation_log_idx_project_code_process_definition_code"';
 EXECUTE 'CREATE INDEX IF NOT EXISTS process_task_relation_log_idx_project_code_process_definition_code ON ' || quote_ident(v_schema) ||'.t_ds_process_task_relation_log USING Btree("project_code","process_definition_code")';