diff --git a/frontend/static/pages/admin/accounts.html b/frontend/static/pages/admin/accounts.html
index 9be1b26..5b5e812 100644
--- a/frontend/static/pages/admin/accounts.html
+++ b/frontend/static/pages/admin/accounts.html
@@ -52,11 +52,15 @@
     </div>
 
     <div class="card">
-      <div style="display:flex;gap:10px;margin-bottom:14px;">
+      <div style="display:flex;gap:10px;margin-bottom:14px;align-items:center;flex-wrap:wrap;">
         <select id="fRole" onchange="load()" style="width:auto">
           <option value="">전체</option><option value="mechanic">정비사</option>
           <option value="manufacturer">제조사</option><option value="admin">관리자</option>
         </select>
+        <label style="display:flex;align-items:center;gap:6px;font-size:13px;cursor:pointer;">
+          <input type="checkbox" id="chkInactive" onchange="load()" style="width:14px;height:14px;">
+          비활성 계정 포함
+        </label>
       </div>
       <div class="tbl-wrap"><table>
         <thead><tr>
@@ -169,10 +173,12 @@ async function rejectUser(id, name) {
 
 async function load() {
   const role = document.getElementById('fRole').value;
+  const showInactive = document.getElementById('chkInactive').checked;
   const users = await API.get('/accounts'+(role?'?role='+role:''));
   document.getElementById('chkAll').checked = false;
   updateDeleteBtn();
-  document.getElementById('tbody').innerHTML = users.filter(u => !u.is_pending).map(u=>`
+  const filtered = users.filter(u => !u.is_pending && (showInactive || u.is_active));
+  document.getElementById('tbody').innerHTML = filtered.map(u=>`
     <tr>
       <td class="cb-cell" onclick="event.stopPropagation()">
         <input type="checkbox" class="row-chk" data-id="${u.id}"
@@ -182,7 +188,7 @@ async function load() {
       <td>${u.name}</td><td>${u.company||'-'}</td><td>${u.phone||'-'}</td>
       <td><span class="badge ${u.is_active?'s-done':'s-waiting'}">${u.is_active?'활성':'비활성'}</span></td>
       <td><button class="btn btn-outline btn-sm" onclick="editUser(${u.id})">수정</button>
-      <button class="btn btn-danger btn-sm" onclick="delUser(${u.id})">삭제</button></td>
+      ${u.is_active ? `<button class="btn btn-danger btn-sm" onclick="delUser(${u.id})">삭제</button>` : ''}</td>
     </tr>`).join('');
 }
 function openModal() { document.getElementById('modal').classList.remove('hidden'); document.getElementById('eId').value=''; document.getElementById('eUsername').disabled=false; document.getElementById('pwReq').style.display='inline'; }
@@ -221,7 +227,11 @@ async function save() {
     closeModal(); load();
   } catch(e) { const el=document.getElementById('modalErr'); el.textContent=e.message; el.style.display='block'; }
 }
-async function delUser(id) { if(!confirm('비활성 처리하시겠습니까?')) return; await API.delete('/accounts/'+id); load(); }
+async function delUser(id) {
+  if (!confirm('계정을 삭제하시겠습니까?\n(처리 이력이 있는 계정은 비활성 처리됩니다.)')) return;
+  try { await API.delete('/accounts/'+id); load(); }
+  catch(e) { alert('오류: ' + e.message); }
+}
 loadPending();
 load();
 </script></body></html>