diff --git a/web/static/css/style.css b/web/static/css/style.css
index 9221add1..31bcd3b7 100644
--- a/web/static/css/style.css
+++ b/web/static/css/style.css
@@ -11287,6 +11287,30 @@ tr.mcp-stats-tool-row[data-tool-name]:focus-visible {
     box-shadow: 0 0 0 2px rgba(0, 102, 255, 0.1);
 }
 
+.knowledge-filters .knowledge-search-field {
+    flex: 1;
+    min-width: 200px;
+}
+
+.knowledge-filters .knowledge-search-field .search-box {
+    width: 100%;
+    flex: none;
+    align-items: stretch;
+}
+
+.knowledge-filters .custom-select-trigger,
+.knowledge-filters .search-box input,
+.knowledge-filters .search-box .btn-search {
+    height: 38px;
+    min-height: 38px;
+    box-sizing: border-box;
+}
+
+.knowledge-filters .search-box .btn-search {
+    padding: 0 12px;
+    flex-shrink: 0;
+}
+
 /* 自定义下拉组件样式 */
 .custom-select-wrapper {
     position: relative;
diff --git a/web/templates/index.html b/web/templates/index.html
index 9950b676..d1b75915 100644
--- a/web/templates/index.html
+++ b/web/templates/index.html
@@ -1537,10 +1537,13 @@
                                         </div>
                                     </div>
                                 </label>
-                                <div class="search-box">
-                                    <input type="text" id="knowledge-search" data-i18n="knowledgePage.searchPlaceholder" data-i18n-attr="placeholder" placeholder="搜索知识..." oninput="handleKnowledgeSearchInput()" onkeydown="if(event.key==='Enter') searchKnowledgeItems()" />
-                                    <button class="btn-search" onclick="searchKnowledgeItems()" data-i18n="common.search" data-i18n-attr="title" title="搜索">🔍</button>
-                                </div>
+                                <label class="knowledge-search-field">
+                                    <span data-i18n="common.search">搜索</span>
+                                    <div class="search-box">
+                                        <input type="text" id="knowledge-search" data-i18n="knowledgePage.searchPlaceholder" data-i18n-attr="placeholder" placeholder="搜索知识..." oninput="handleKnowledgeSearchInput()" onkeydown="if(event.key==='Enter') searchKnowledgeItems()" />
+                                        <button class="btn-search" onclick="searchKnowledgeItems()" data-i18n="common.search" data-i18n-attr="title" title="搜索">🔍</button>
+                                    </div>
+                                </label>
                             </div>
                         </div>
                         <div id="knowledge-items-list" class="knowledge-items-list">