diff --git a/src/main/java/com/guo/learningprogresstracker/entity/BaseEntity.java b/src/main/java/com/guo/learningprogresstracker/entity/BaseEntity.java
index 6c043e3..a8c0b2e 100644
--- a/src/main/java/com/guo/learningprogresstracker/entity/BaseEntity.java
+++ b/src/main/java/com/guo/learningprogresstracker/entity/BaseEntity.java
@@ -2,6 +2,7 @@ package com.guo.learningprogresstracker.entity;
 
 import com.baomidou.mybatisplus.annotation.FieldFill;
 import com.baomidou.mybatisplus.annotation.TableField;
+import com.baomidou.mybatisplus.annotation.TableLogic;
 import lombok.Data;
 
 import java.time.LocalDateTime;
@@ -26,4 +27,7 @@ public class BaseEntity {
 
     @TableField(fill = FieldFill.INSERT_UPDATE)
     private String deviceInfo;
+
+    @TableLogic
+    private Integer deleted;
 }
diff --git a/src/main/resources/db/migration/V20250608_1__removeMaterialUrlNotNull.sql b/src/main/resources/db/migration/V20250608_1__removeMaterialUrlNotNull.sql
new file mode 100644
index 0000000..9f2df19
--- /dev/null
+++ b/src/main/resources/db/migration/V20250608_1__removeMaterialUrlNotNull.sql
@@ -0,0 +1,2 @@
+alter table tasks
+    modify material_url varchar(255) null comment '学习材料的存储URL' COMMENT '上次该任务学习情况' after calculated_priority;
\ No newline at end of file
diff --git a/src/main/resources/db/migration/V20250628_1__addTableLogic.sql b/src/main/resources/db/migration/V20250628_1__addTableLogic.sql
new file mode 100644
index 0000000..2d69a92
--- /dev/null
+++ b/src/main/resources/db/migration/V20250628_1__addTableLogic.sql
@@ -0,0 +1,27 @@
+alter table flyway_schema_history
+    add deleted int default 0 not null comment '逻辑删除符';
+
+alter table study_expectations
+    add deleted int default 0 not null comment '逻辑删除符';
+
+alter table study_report_fragments
+    add deleted int default 0 not null comment '逻辑删除符';
+
+alter table study_reports
+    add deleted int default 0 not null comment '逻辑删除符';
+
+alter table study_sessions
+    add deleted int default 0 not null comment '逻辑删除符';
+
+alter table tasks
+    add deleted int default 0 not null comment '逻辑删除符';
+
+alter table test_table
+    add deleted int default 0 not null comment '逻辑删除符';
+
+alter table user
+    add deleted int default 0 not null comment '逻辑删除符';
+
+alter table user_task
+    add deleted int default 0 not null comment '逻辑删除符';
+