diff --git a/backend/templates/admin_members.html b/backend/templates/admin_members.html
index 620cf0d..405cd6c 100644
--- a/backend/templates/admin_members.html
+++ b/backend/templates/admin_members.html
@@ -829,12 +829,19 @@
 
     function viewDetail(idx) {
         currentDetailMember = membersData[idx];
-        const phone = (currentDetailMember.phone || '').replace(/-/g, '').replace(/ /g, '');
+        
+        // 전화번호 우선순위: phone > phone1 > tel_no > phone2
+        let phone = (currentDetailMember.phone || '').replace(/-/g, '').replace(/ /g, '');
+        if (!phone) phone = (currentDetailMember.phone1 || '').replace(/-/g, '').replace(/ /g, '');
+        if (!phone) phone = (currentDetailMember.tel_no || '').replace(/-/g, '').replace(/ /g, '');
+        if (!phone) phone = (currentDetailMember.phone2 || '').replace(/-/g, '').replace(/ /g, '');
+        
+        const displayPhone = currentDetailMember.phone || currentDetailMember.phone1 || currentDetailMember.tel_no || currentDetailMember.phone2 || '';
         
         // 모달 열기
         document.getElementById('detailModal').classList.add('active');
         document.getElementById('detailName').textContent = currentDetailMember.name || '이름 없음';
-        document.getElementById('detailPhone').textContent = formatPhone(currentDetailMember.phone) || '전화번호 없음';
+        document.getElementById('detailPhone').textContent = formatPhone(displayPhone) || '전화번호 없음';
         document.getElementById('detailBalance').textContent = '로딩...';
         document.getElementById('detailContent').innerHTML = '<div class="detail-loading">데이터를 불러오는 중...</div>';