diff --git a/gym-manage-api/manage-sys/src/main/java/cn/novalon/gym/manage/sys/core/domain/BaseDomain.java b/gym-manage-api/manage-sys/src/main/java/cn/novalon/gym/manage/sys/core/domain/BaseDomain.java
index 4ae64f9..8c9b09d 100644
--- a/gym-manage-api/manage-sys/src/main/java/cn/novalon/gym/manage/sys/core/domain/BaseDomain.java
+++ b/gym-manage-api/manage-sys/src/main/java/cn/novalon/gym/manage/sys/core/domain/BaseDomain.java
@@ -76,10 +76,29 @@ public abstract class BaseDomain {
         return this.id;
     }
 
+    /**
+     * 删除（幂等操作）
+     * 已删除的对象不会更新删除时间
+     */
+    public void delete() {
+        if (this.deletedAt == null) {
+            this.deletedAt = LocalDateTime.now();
+        }
+    }
+
+    /**
+     * 恢复已删除的对象
+     */
+    public void restore() {
+        this.deletedAt = null;
+    }
+
     @Override
     public boolean equals(Object o) {
-        if (this == o) return true;
-        if (o == null || getClass() != o.getClass()) return false;
+        if (this == o)
+            return true;
+        if (o == null || getClass() != o.getClass())
+            return false;
         BaseDomain that = (BaseDomain) o;
         return id != null && id.equals(that.id);
     }
diff --git a/gym-manage-api/manage-sys/src/main/java/cn/novalon/gym/manage/sys/core/domain/SysPermission.java b/gym-manage-api/manage-sys/src/main/java/cn/novalon/gym/manage/sys/core/domain/SysPermission.java
index 1f45d9a..72e76a0 100644
--- a/gym-manage-api/manage-sys/src/main/java/cn/novalon/gym/manage/sys/core/domain/SysPermission.java
+++ b/gym-manage-api/manage-sys/src/main/java/cn/novalon/gym/manage/sys/core/domain/SysPermission.java
@@ -77,18 +77,4 @@ public class SysPermission extends BaseDomain {
     public void setStatus(Integer status) {
         this.status = status;
     }
-
-    /**
-     * 删除权限
-     */
-    public void delete() {
-        this.deletedAt = java.time.LocalDateTime.now();
-    }
-
-    /**
-     * 恢复权限
-     */
-    public void restore() {
-        this.deletedAt = null;
-    }
 }
\ No newline at end of file
diff --git a/gym-manage-api/manage-sys/src/main/java/cn/novalon/gym/manage/sys/core/domain/SysRole.java b/gym-manage-api/manage-sys/src/main/java/cn/novalon/gym/manage/sys/core/domain/SysRole.java
index 4d376b6..f822793 100644
--- a/gym-manage-api/manage-sys/src/main/java/cn/novalon/gym/manage/sys/core/domain/SysRole.java
+++ b/gym-manage-api/manage-sys/src/main/java/cn/novalon/gym/manage/sys/core/domain/SysRole.java
@@ -57,18 +57,4 @@ public class SysRole extends BaseDomain {
     public void setStatus(Integer status) {
         this.status = status;
     }
-
-    /**
-     * 删除角色
-     */
-    public void delete() {
-        this.deletedAt = LocalDateTime.now();
-    }
-
-    /**
-     * 恢复角色
-     */
-    public void restore() {
-        this.deletedAt = null;
-    }
 }
diff --git a/gym-manage-api/manage-sys/src/main/java/cn/novalon/gym/manage/sys/core/domain/SysUser.java b/gym-manage-api/manage-sys/src/main/java/cn/novalon/gym/manage/sys/core/domain/SysUser.java
index 8c365bc..380fffb 100644
--- a/gym-manage-api/manage-sys/src/main/java/cn/novalon/gym/manage/sys/core/domain/SysUser.java
+++ b/gym-manage-api/manage-sys/src/main/java/cn/novalon/gym/manage/sys/core/domain/SysUser.java
@@ -100,11 +100,4 @@ public class SysUser extends BaseDomain {
     public void setStatus(Integer status) {
         this.status = status;
     }
-
-    /**
-     * 删除用户
-     */
-    public void delete() {
-        this.deletedAt = LocalDateTime.now();
-    }
 }
diff --git a/gym-manage-api/manage-sys/src/test/java/cn/novalon/gym/manage/sys/core/domain/SysUserTest.java b/gym-manage-api/manage-sys/src/test/java/cn/novalon/gym/manage/sys/core/domain/SysUserTest.java
index 520cf82..35f029a 100644
--- a/gym-manage-api/manage-sys/src/test/java/cn/novalon/gym/manage/sys/core/domain/SysUserTest.java
+++ b/gym-manage-api/manage-sys/src/test/java/cn/novalon/gym/manage/sys/core/domain/SysUserTest.java
@@ -59,7 +59,7 @@ class SysUserTest {
 
         assertNotNull(firstDeleteTime);
         assertNotNull(secondDeleteTime);
-        assertNotEquals(firstDeleteTime, secondDeleteTime);
+        assertEquals(firstDeleteTime, secondDeleteTime);
     }
 
     @Test