diff --git a/backend/src/main/java/com/designhub/controller/DingTalkController.java b/backend/src/main/java/com/designhub/controller/DingTalkController.java
index 4debd99..fb21da1 100644
--- a/backend/src/main/java/com/designhub/controller/DingTalkController.java
+++ b/backend/src/main/java/com/designhub/controller/DingTalkController.java
@@ -237,17 +237,12 @@ public class DingTalkController {
             default:
                 // 简单测试消息
                 title = params.getOrDefault("title", "系统测试消息");
-                content.append("--------------------------------  \n");
-                content.append("    【 系 统 测 试 】    \n");
-                content.append("--------------------------------  \n\n");
                 content.append("这是一条来自 DesignHub 系统的测试消息  \n");
                 content.append("  \n");
                 content.append("如果您收到此消息，说明钉钉机器人配置成功！  \n");
                 content.append("  \n");
                 content.append("测试时间：").append(java.time.LocalDateTime.now().format(
-                    java.time.format.DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"))).append("  \n");
-                content.append("  \n");
-                content.append("点击下方按钮查看详情");
+                    java.time.format.DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")));
                 break;
         }
         
@@ -375,18 +370,13 @@ public class DingTalkController {
                 
             default:
                 title = params.getOrDefault("title", "系统测试消息");
-                content.append("--------------------------------  \n");
-                content.append("    【 系 统 测 试 】    \n");
-                content.append("--------------------------------  \n\n");
                 content.append("亲爱的 ").append(user.getRealName() != null ? user.getRealName() : user.getUsername()).append("：  \n\n");
                 content.append("这是一条来自 DesignHub 系统的测试消息  \n");
                 content.append("  \n");
                 content.append("如果您收到此消息，说明钉钉个人通知配置成功！  \n");
                 content.append("  \n");
                 content.append("测试时间：").append(java.time.LocalDateTime.now().format(
-                    java.time.format.DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"))).append("  \n");
-                content.append("  \n");
-                content.append("点击下方按钮查看详情");
+                    java.time.format.DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")));
                 break;
         }
         
diff --git a/backend/src/main/java/com/designhub/service/DingTalkService.java b/backend/src/main/java/com/designhub/service/DingTalkService.java
index 9a4150d..3669101 100644
--- a/backend/src/main/java/com/designhub/service/DingTalkService.java
+++ b/backend/src/main/java/com/designhub/service/DingTalkService.java
@@ -289,8 +289,8 @@ public class DingTalkService {
             
             Map<String, String> actionCard = new HashMap<>();
             actionCard.put("title", title);
-            // 构建 markdown 正文，包含标题和内容
-            String markdown = "### " + title + "\n\n" + content + "\n\n---\n*点击下方按钮查看详情*";
+            // 构建 markdown 正文（卡片已有标题，内容中不再重复）
+            String markdown = content;
             actionCard.put("markdown", markdown);
             actionCard.put("single_title", "查看详情 »");
             actionCard.put("single_url", jumpUrl);
@@ -370,9 +370,8 @@ public class DingTalkService {
             Map<String, Object> actionCard = new HashMap<>();
             actionCard.put("title", title);
             
-            // 构建 markdown 正文
+            // 构建 markdown 正文（卡片已有标题，内容中不再重复）
             StringBuilder markdownBuilder = new StringBuilder();
-            markdownBuilder.append("### ").append(title).append("\n\n");
             markdownBuilder.append(content);
             
             // 如果有@人，在内容中添加@标记
diff --git a/backend/src/main/java/com/designhub/service/TaskApprovalService.java b/backend/src/main/java/com/designhub/service/TaskApprovalService.java
index 5726d63..853bbc0 100644
--- a/backend/src/main/java/com/designhub/service/TaskApprovalService.java
+++ b/backend/src/main/java/com/designhub/service/TaskApprovalService.java
@@ -346,9 +346,6 @@ public class TaskApprovalService {
             try {
                 String title = "新任务发布";
                 StringBuilder content = new StringBuilder();
-                content.append("--------------------------------  \n");
-                content.append("      【 新 任 务 发 布 】      \n");
-                content.append("--------------------------------  \n\n");
                 
                 // 基本信息
                 content.append("**任务名称**：").append(task.getTitle()).append("  \n");