diff --git a/web-ui/code.js b/web-ui/code.js
index b307fa4..688f462 100644
--- a/web-ui/code.js
+++ b/web-ui/code.js
@@ -897,7 +897,7 @@ function openArduinoEmulator() {
       body: JSON.stringify({ code: file.content, board: 'uno' }),
     }).then(r => r.json()).then(data => {
       if (btn) { btn.textContent = '🔌 에뮬레이터'; btn.disabled = false; }
-      if (data.error) { codeAiAppend('system', '⚠️ 컴파일 오류:\n' + data.error); return; }
+      if (data.error) { sendCompileErrorToAI(data.error, file.name, file.content); return; }
       sessionStorage.setItem('arduino_sketch', file.content);
       sessionStorage.setItem('arduino_hex', data.hex);
       sessionStorage.setItem('arduino_filename', file.name);
@@ -1323,7 +1323,7 @@ function codeRunWith(mode) {
       body: JSON.stringify({ code: file.content, board: 'esp32' }),
     }).then(r => r.json()).then(data => {
       if (data.error) {
-        codeAiAppend('system', '⚠️ 컴파일 오류:\n' + data.error);
+        sendCompileErrorToAI(data.error, file.name, file.content);
         return;
       }
       sessionStorage.setItem('arduino_merged', data.merged);
@@ -1344,9 +1344,8 @@ function codeRunWith(mode) {
       body: JSON.stringify({ code: file.content, board }),
     }).then(r => r.json()).then(data => {
       if (data.error) {
-        let msg = '⚠️ 컴파일 오류:\n' + data.error;
-        if (data.install) msg += '\n\n설치 필요:\n' + data.install;
-        codeAiAppend('system', msg);
+        const extra = data.install ? `\n\n설치 필요: ${data.install}` : '';
+        sendCompileErrorToAI(data.error + extra, file.name, file.content);
         return;
       }
       sessionStorage.setItem('arduino_hex', data.hex);
@@ -1382,6 +1381,14 @@ function codeRunWith(mode) {
   }, codeTermOpen ? 0 : 500);
 }
 
+function sendCompileErrorToAI(error, filename, code) {
+  const inp = document.getElementById('code-ai-input');
+  if (!inp) return;
+  const codeBlock = code ? `\n\n코드:\n\`\`\`cpp\n${code}\n\`\`\`` : '';
+  inp.value = `아두이노 컴파일 오류가 발생했습니다. 원인을 설명하고 수정해줘.\n\n파일: ${filename}\n오류:\n\`\`\`\n${error}\n\`\`\`${codeBlock}`;
+  codeAiSend();
+}
+
 function codeSendSelectionToAI() {
   if (!monacoEditor) return;
   const sel = monacoEditor.getSelection();