diff --git a/src/test/java/com/example/g8backend/service/PostServiceTest.java b/src/test/java/com/example/g8backend/service/PostServiceTest.java
index 6f54177..0161229 100644
--- a/src/test/java/com/example/g8backend/service/PostServiceTest.java
+++ b/src/test/java/com/example/g8backend/service/PostServiceTest.java
@@ -149,4 +149,49 @@
         assertTrue(result.isEmpty());
         verify(postMapper).getPostsByUserId(999L);
     }
+
+    // 新增测试方法：搜索帖子，支持多个标签
+    @Test
+    @DisplayName("搜索帖子-通过关键词和多个标签")
+    void searchPosts_WithKeywordAndTags_ShouldReturnPosts() {
+        // Arrange
+        List<Long> tagIds = Arrays.asList(1L, 2L); // 假设存在标签ID 1和2
+        String keyword = "测试内容";
+        String author = "作者";
+        List<Post> expectedPosts = Arrays.asList(testPost);
+
+        // 模拟PostMapper的searchPosts方法
+        when(postMapper.searchPosts(keyword, tagIds, author)).thenReturn(expectedPosts);
+
+        // Act
+        List<Post> result = postService.searchPosts(keyword, tagIds, author);
+
+        // Assert
+        assertNotNull(result);
+        assertFalse(result.isEmpty());
+        assertEquals(testPost.getPostId(), result.get(0).getPostId());
+        verify(postMapper).searchPosts(keyword, tagIds, author);
+    }
+
+    @Test
+    @DisplayName("搜索帖子-没有匹配的帖子")
+    void searchPosts_WhenNoPosts_ShouldReturnEmptyList() {
+        // Arrange
+        List<Long> tagIds = Arrays.asList(3L, 4L); // 假设标签ID 3和4没有匹配的帖子
+        String keyword = "不存在的内容";
+        String author = "不存在的作者";
+        List<Post> expectedPosts = Arrays.asList(); // 没有匹配的帖子
+
+        // 模拟PostMapper的searchPosts方法
+        when(postMapper.searchPosts(keyword, tagIds, author)).thenReturn(expectedPosts);
+
+        // Act
+        List<Post> result = postService.searchPosts(keyword, tagIds, author);
+
+        // Assert
+        assertNotNull(result);
+        assertTrue(result.isEmpty());
+        verify(postMapper).searchPosts(keyword, tagIds, author);
+    }
+
 }
\ No newline at end of file