diff --git a/dolphinscheduler-dao/src/main/resources/sql/dolphinscheduler_mysql.sql b/dolphinscheduler-dao/src/main/resources/sql/dolphinscheduler_mysql.sql
index 5c3615d697..1f23eb144c 100644
--- a/dolphinscheduler-dao/src/main/resources/sql/dolphinscheduler_mysql.sql
+++ b/dolphinscheduler-dao/src/main/resources/sql/dolphinscheduler_mysql.sql
@@ -495,7 +495,7 @@ CREATE TABLE `t_ds_task_definition_log` (
   `project_code` bigint(20) NOT NULL COMMENT 'project code',
   `user_id` int(11) DEFAULT NULL COMMENT 'task definition creator id',
   `task_type` varchar(50) NOT NULL COMMENT 'task type',
-  `task_params` text COMMENT 'job custom parameters',
+  `task_params` longtext COMMENT 'job custom parameters',
   `flag` tinyint(2) DEFAULT NULL COMMENT '0 not available, 1 available',
   `task_priority` tinyint(4) DEFAULT NULL COMMENT 'job priority',
   `worker_group` varchar(200) DEFAULT NULL COMMENT 'worker grouping',
diff --git a/dolphinscheduler-dao/src/main/resources/sql/upgrade/2.0.0_schema/mysql/dolphinscheduler_ddl.sql b/dolphinscheduler-dao/src/main/resources/sql/upgrade/2.0.0_schema/mysql/dolphinscheduler_ddl.sql
index 4537604e0a..d53a9c18ea 100644
--- a/dolphinscheduler-dao/src/main/resources/sql/upgrade/2.0.0_schema/mysql/dolphinscheduler_ddl.sql
+++ b/dolphinscheduler-dao/src/main/resources/sql/upgrade/2.0.0_schema/mysql/dolphinscheduler_ddl.sql
@@ -289,7 +289,7 @@ CREATE TABLE `t_ds_task_definition_log` (
   `project_code` bigint(20) NOT NULL COMMENT 'project code',
   `user_id` int(11) DEFAULT NULL COMMENT 'task definition creator id',
   `task_type` varchar(50) NOT NULL COMMENT 'task type',
-  `task_params` text COMMENT 'job custom parameters',
+  `task_params` longtext COMMENT 'job custom parameters',
   `flag` tinyint(2) DEFAULT NULL COMMENT '0 not available, 1 available',
   `task_priority` tinyint(4) DEFAULT NULL COMMENT 'job priority',
   `worker_group` varchar(200) DEFAULT NULL COMMENT 'worker grouping',