diff --git a/backend/services/data-management-service/src/main/java/com/datamate/datamanagement/application/TagApplicationService.java b/backend/services/data-management-service/src/main/java/com/datamate/datamanagement/application/TagApplicationService.java
index 95587564..466fc152 100644
--- a/backend/services/data-management-service/src/main/java/com/datamate/datamanagement/application/TagApplicationService.java
+++ b/backend/services/data-management-service/src/main/java/com/datamate/datamanagement/application/TagApplicationService.java
@@ -1,6 +1,8 @@
 package com.datamate.datamanagement.application;
 
+import com.datamate.common.infrastructure.exception.BusinessException;
 import com.datamate.datamanagement.domain.model.dataset.Tag;
+import com.datamate.datamanagement.infrastructure.exception.DataManagementErrorCode;
 import com.datamate.datamanagement.infrastructure.persistence.mapper.TagMapper;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Service;
@@ -30,7 +32,7 @@ public TagApplicationService(TagMapper tagMapper) {
     public Tag createTag(String name, String color, String description) {
         // 检查名称是否已存在
         if (tagMapper.findByName(name) != null) {
-            throw new IllegalArgumentException("Tag with name '" + name + "' already exists");
+            throw BusinessException.of(DataManagementErrorCode.TAG_NAME_DUPLICATE);
         }
 
         Tag tag = new Tag(name, description, null, color);
diff --git a/frontend/public/config/error-code.json b/frontend/public/config/error-code.json
index 0a7bc651..81f85cd6 100644
--- a/frontend/public/config/error-code.json
+++ b/frontend/public/config/error-code.json
@@ -16,6 +16,29 @@
   "operator.0004": "不支持的文件类型，当前仅支持tar和zip",
   "operator.0005": "解析算子包失败",
   "operator.0006": "缺少必要的字段",
+  "data_management.0001": "数据集不存在",
+  "data_management.0002": "数据集已存在",
+  "data_management.0003": "数据集状态错误",
+  "data_management.0004": "数据集标签不存在",
+  "data_management.0005": "数据集标签已存在",
+  "data_management.0006": "数据集文件已存在",
+  "data_management.0007": "目录不存在",
+  "data_management.0008": "数据集名称长度不能超过255个字符",
+  "data_management.0009": "数据集类型不合法",
+  "data_management.0010": "数据集状态不合法",
+  "data_management.0011": "标签名称长度不能超过100个字符",
+  "data_management.0012": "标签名称已存在",
+  "data_management.0013": "标签颜色格式不正确，应为十六进制颜色代码",
+  "data_management.0014": "保留天数必须为非负整数",
+  "data_management.0015": "路径长度不能超过限制",
+  "data_management.0016": "文件名包含非法字符",
+  "data_management.0017": "路径前缀不能以点开头",
+  "sys.0001": "未知错误",
+  "sys.0002": "系统繁忙，请稍后重试",
+  "sys.0003": "参数错误",
+  "sys.0004": "资源未找到",
+  "sys.0005": "权限不足",
+  "sys.0006": "文件系统错误",
   "400": "请求参数错误",
   "401": "登录已过期，请重新登录",
   "403": "没有权限访问该资源",
diff --git a/frontend/src/components/business/TagManagement.tsx b/frontend/src/components/business/TagManagement.tsx
index 56e621c5..e821b289 100644
--- a/frontend/src/components/business/TagManagement.tsx
+++ b/frontend/src/components/business/TagManagement.tsx
@@ -119,7 +119,8 @@ const TagManager: React.FC = ({
       const { data } = await onFetch?.();
       setTags(data || []);
     } catch (e) {
-      message.error(t("tagManagement.messages.fetchFailed"));
+      // 错误已由全局拦截器处理，无需重复提示
+      console.error("Failed to fetch tags:", e);
     }
   };
 
@@ -133,7 +134,8 @@ const TagManager: React.FC = ({
       setNewTag("");
       message.success(t("tagManagement.messages.addSuccess"));
     } catch (error) {
-      message.error(t("tagManagement.messages.addFailed"));
+      // 错误已由全局拦截器处理，无需重复提示
+      console.error("Failed to add tag:", error);
     }
   };
 
@@ -144,7 +146,8 @@ const TagManager: React.FC = ({
       fetchTags();
       message.success(t("tagManagement.messages.deleteSuccess"));
     } catch (error) {
-      message.error(t("tagManagement.messages.deleteFailed"));
+      // 错误已由全局拦截器处理，无需重复提示
+      console.error("Failed to delete tag:", error);
     }
   };
 
@@ -154,7 +157,8 @@ const TagManager: React.FC = ({
       fetchTags();
       message.success(t("tagManagement.messages.updateSuccess"));
     } catch (error) {
-      message.error(t("tagManagement.messages.updateFailed"));
+      // 错误已由全局拦截器处理，无需重复提示
+      console.error("Failed to update tag:", error);
     }
   };