diff --git a/backend/src/main/java/com/qqchen/deploy/backend/deploy/entity/SSHAuditLog.java b/backend/src/main/java/com/qqchen/deploy/backend/deploy/entity/SSHAuditLog.java
index f1a79c39..d2772ea9 100644
--- a/backend/src/main/java/com/qqchen/deploy/backend/deploy/entity/SSHAuditLog.java
+++ b/backend/src/main/java/com/qqchen/deploy/backend/deploy/entity/SSHAuditLog.java
@@ -1,5 +1,6 @@
 package com.qqchen.deploy.backend.deploy.entity;
 
+import com.qqchen.deploy.backend.framework.annotation.LogicDelete;
 import com.qqchen.deploy.backend.framework.domain.Entity;
 import jakarta.persistence.Column;
 import jakarta.persistence.Table;
@@ -10,11 +11,17 @@ import java.time.LocalDateTime;
 
 /**
  * SSH终端审计日志实体
+ * 
+ * ⚠️ 审计日志逻辑删除设计：
+ * - 支持逻辑删除（@LogicDelete）而非物理删除
+ * - 确保审计记录的可追溯性和合规性
+ * - 删除的审计日志仍可通过后台管理查询
  */
 @Data
 @EqualsAndHashCode(callSuper = true)
 @jakarta.persistence.Entity
 @Table(name = "deploy_ssh_audit_log")
+@LogicDelete
 public class SSHAuditLog extends Entity<Long> {
 
     /**
diff --git a/backend/src/main/java/com/qqchen/deploy/backend/deploy/repository/ISSHAuditLogRepository.java b/backend/src/main/java/com/qqchen/deploy/backend/deploy/repository/ISSHAuditLogRepository.java
index a8b15cc0..6e996c06 100644
--- a/backend/src/main/java/com/qqchen/deploy/backend/deploy/repository/ISSHAuditLogRepository.java
+++ b/backend/src/main/java/com/qqchen/deploy/backend/deploy/repository/ISSHAuditLogRepository.java
@@ -2,6 +2,9 @@ package com.qqchen.deploy.backend.deploy.repository;
 
 import com.qqchen.deploy.backend.deploy.entity.SSHAuditLog;
 import com.qqchen.deploy.backend.framework.repository.IBaseRepository;
+import org.springframework.data.jpa.repository.Modifying;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
 import org.springframework.stereotype.Repository;
 
 /**
@@ -24,4 +27,12 @@ public interface ISSHAuditLogRepository extends IBaseRepository<SSHAuditLog, Lon
      * 统计用户对指定服务器当前活跃的SSH会话数
      */
     long countByUserIdAndServerIdAndDisconnectTimeIsNull(Long userId, Long serverId);
+    
+    /**
+     * 逻辑删除指定服务器的所有审计日志
+     * 使用 @Modifying 注解执行批量更新
+     */
+    @Modifying
+    @Query("UPDATE SSHAuditLog a SET a.deleted = true WHERE a.serverId = :serverId")
+    void deleteByServerId(@Param("serverId") Long serverId);
 }
diff --git a/backend/src/main/java/com/qqchen/deploy/backend/deploy/service/impl/ServerServiceImpl.java b/backend/src/main/java/com/qqchen/deploy/backend/deploy/service/impl/ServerServiceImpl.java
index 36cd86ad..518f326c 100644
--- a/backend/src/main/java/com/qqchen/deploy/backend/deploy/service/impl/ServerServiceImpl.java
+++ b/backend/src/main/java/com/qqchen/deploy/backend/deploy/service/impl/ServerServiceImpl.java
@@ -8,6 +8,7 @@ import com.qqchen.deploy.backend.deploy.enums.ServerStatusEnum;
 import com.qqchen.deploy.backend.framework.enums.AuthTypeEnum;
 import com.qqchen.deploy.backend.deploy.query.ServerQuery;
 import com.qqchen.deploy.backend.deploy.repository.IServerRepository;
+import com.qqchen.deploy.backend.deploy.repository.ISSHAuditLogRepository;
 import com.qqchen.deploy.backend.deploy.service.IServerService;
 import com.qqchen.deploy.backend.framework.annotation.ServiceType;
 import com.qqchen.deploy.backend.framework.enums.ResponseCode;
@@ -38,6 +39,9 @@ public class ServerServiceImpl
     
     @Resource
     private SSHCommandServiceFactory sshCommandServiceFactory;
+    
+    @Resource
+    private ISSHAuditLogRepository sshAuditLogRepository;
 
     public ServerServiceImpl(IServerRepository serverRepository) {
         this.serverRepository = serverRepository;
@@ -206,5 +210,32 @@ public class ServerServiceImpl
         
         return info;
     }
+    
+    /**
+     * 重写删除方法
+     * 
+     * ⚠️ 删除策略：
+     * 1. 服务器：物理删除（没有@LogicDelete注解）
+     * 2. 审计日志：逻辑删除（有@LogicDelete注解）
+     * 3. 审计日志永久保留，仅标记deleted=true，确保审计可追溯
+     */
+    @Override
+    @Transactional
+    public void delete(Long id) {
+        log.info("删除服务器: serverId={}", id);
+        
+        // 1. 逻辑删除关联的SSH审计日志（保留历史记录）
+        try {
+            sshAuditLogRepository.deleteByServerId(id);
+            log.info("已逻辑删除服务器关联的SSH审计日志: serverId={}", id);
+        } catch (Exception e) {
+            log.warn("逻辑删除服务器关联的SSH审计日志失败: serverId={}, error={}", id, e.getMessage());
+            // 继续执行，即使审计日志删除失败也要删除服务器
+        }
+        
+        // 2. 物理删除服务器
+        super.delete(id);
+        log.info("服务器删除成功: serverId={}", id);
+    }
 }
 
diff --git a/backend/src/main/resources/db/changelog/changes/v1.0.0-schema.sql b/backend/src/main/resources/db/changelog/changes/v1.0.0-schema.sql
index 09b346f7..3fc224b6 100644
--- a/backend/src/main/resources/db/changelog/changes/v1.0.0-schema.sql
+++ b/backend/src/main/resources/db/changelog/changes/v1.0.0-schema.sql
@@ -1256,7 +1256,9 @@ CREATE TABLE deploy_ssh_audit_log
     KEY idx_server_id (server_id),
     KEY idx_connect_time (connect_time),
     KEY idx_session_id (session_id),
-    KEY idx_status (status),
-    CONSTRAINT fk_ssh_audit_user FOREIGN KEY (user_id) REFERENCES sys_user (id),
-    CONSTRAINT fk_ssh_audit_server FOREIGN KEY (server_id) REFERENCES deploy_server (id)
+    KEY idx_status (status)
+    -- ⚠️ 审计日志表不添加外键约束，原因：
+    -- 1. 审计日志需要永久保留（逻辑删除）
+    -- 2. 删除用户/服务器时，审计日志不应被物理删除
+    -- 3. user_id/server_id 仅作为历史记录字段，通过冗余字段可查询
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci COMMENT='SSH终端审计日志表';