diff --git a/src/main/tool-handlers-system.ts b/src/main/tool-handlers-system.ts
index 843c7d7..a44a9a3 100644
--- a/src/main/tool-handlers-system.ts
+++ b/src/main/tool-handlers-system.ts
@@ -455,7 +455,8 @@ async function handleWebSearchSearxng(
   const safesearch = getSetting<number>('searxng_safesearch', 1);
   const cfgTimeRange = getSetting<string>('searxng_time_range', '');
   const effectiveTimeRange = timeRange || cfgTimeRange;
-  const cfgMaxResults = getSetting<number>('searxng_max_results', 20);
+  const cfgMaxResults = getSetting<number>('searxng_max_results', 0);
+  const effectiveMax = cfgMaxResults > 0 ? cfgMaxResults : maxResults;
 
   const format = getSetting<string>('searxng_format', 'json');
   const isHtml = format === 'html';
@@ -488,8 +489,8 @@ async function handleWebSearchSearxng(
     if (isHtml) {
       const html = await resp.text();
       const text = htmlToText(html);
-      const truncated = cfgMaxResults > 0 && text.length > cfgMaxResults * 500;
-      const content = truncated ? text.slice(0, cfgMaxResults * 500) + '\n...（已截断）' : text;
+      const truncated = effectiveMax > 0 && text.length > effectiveMax * 500;
+      const content = truncated ? text.slice(0, effectiveMax * 500) + '\n...（已截断）' : text;
       sendLog('success', `🔍 SearXNG HTML 完成`, `${text.length} 字符`);
       return {
         success: true,
@@ -517,7 +518,7 @@ async function handleWebSearchSearxng(
       unresponsive_engines?: Array<[string, string]>;
     };
 
-    const rawResults = (data.results || []).slice(0, cfgMaxResults);
+    const rawResults = (data.results || []).slice(0, effectiveMax);
     if (rawResults.length === 0) {
       return { success: false, error: 'SearXNG 未返回任何结果，请尝试其他关键词或调整搜索引擎配置' };
     }
@@ -553,7 +554,7 @@ async function handleWebSearchSearxng(
         weight: 80,
         reachable: true,
       })),
-      cfgMaxResults,
+      effectiveMax,
       false,
       engineStats
     );
diff --git a/src/renderer/components/searxng-modal.ts b/src/renderer/components/searxng-modal.ts
index 4bbe94f..5f1ff44 100644
--- a/src/renderer/components/searxng-modal.ts
+++ b/src/renderer/components/searxng-modal.ts
@@ -15,7 +15,7 @@ const DEFAULTS = {
   language: 'zh-CN',
   safesearch: 1,
   time_range: '',
-  max_results: 20,
+  max_results: 0,
   auth_key: '',
   format: 'json',
 };
@@ -61,7 +61,7 @@ function syncFormFromConfig(): void {
   (document.querySelector('#searxngLanguage') as HTMLSelectElement).value = searxngConfig.language;
   (document.querySelector('#searxngSafeSearch') as HTMLSelectElement).value = String(searxngConfig.safesearch);
   (document.querySelector('#searxngTimeRange') as HTMLSelectElement).value = searxngConfig.time_range || '';
-  (document.querySelector('#searxngMaxResults') as HTMLInputElement).value = String(searxngConfig.max_results);
+  (document.querySelector('#searxngMaxResults') as HTMLInputElement).value = searxngConfig.max_results > 0 ? String(searxngConfig.max_results) : '';
   (document.querySelector('#searxngAuthKey') as HTMLInputElement).value = searxngConfig.auth_key;
   (document.querySelector('#searxngFormat') as HTMLSelectElement).value = searxngConfig.format;
   const toggle = document.querySelector('#toggleSearxngEnabled') as HTMLInputElement;
@@ -134,7 +134,7 @@ export function initSearxngModal(): void {
     searxngConfig.language = (document.querySelector('#searxngLanguage') as HTMLSelectElement).value;
     searxngConfig.safesearch = parseInt((document.querySelector('#searxngSafeSearch') as HTMLSelectElement).value);
     searxngConfig.time_range = (document.querySelector('#searxngTimeRange') as HTMLSelectElement).value;
-    searxngConfig.max_results = parseInt((document.querySelector('#searxngMaxResults') as HTMLInputElement).value) || 20;
+    searxngConfig.max_results = parseInt((document.querySelector('#searxngMaxResults') as HTMLInputElement).value) || 0;
     searxngConfig.auth_key = (document.querySelector('#searxngAuthKey') as HTMLInputElement).value.trim();
     searxngConfig.format = (document.querySelector('#searxngFormat') as HTMLSelectElement).value;
     const db = state.get<ChatDB | null>(KEYS.DB);
diff --git a/src/renderer/index.html b/src/renderer/index.html
index 63c46dc..cbef210 100644
--- a/src/renderer/index.html
+++ b/src/renderer/index.html
@@ -774,7 +774,7 @@
                 </div>
                 <div class="setting-group">
                     <label class="setting-label">单次结果数</label>
-                    <input class="setting-input" id="searxngMaxResults" type="number" min="1" max="50" step="1" value="20" style="margin-bottom:0;">
+                    <input class="setting-input" id="searxngMaxResults" type="number" min="0" max="50" step="1" placeholder="0=使用默认值" style="margin-bottom:0;">
                 </div>
                 <div class="setting-group">
                     <label class="setting-label">返回格式</label>