diff --git a/backend/templates/admin_rx_usage.html b/backend/templates/admin_rx_usage.html
index 4f06f6b..0ea51c5 100644
--- a/backend/templates/admin_rx_usage.html
+++ b/backend/templates/admin_rx_usage.html
@@ -841,13 +841,14 @@
                         <th class="center">처방횟수</th>
                         <th class="center">투약량</th>
                         <th class="center" style="color:var(--accent-cyan);">주문량</th>
+                        <th class="center" style="color:var(--accent-purple);font-size:11px;">선호도매상</th>
                         <th class="right">매출액</th>
                         <th class="center" style="width:90px">주문수량</th>
                     </tr>
                 </thead>
                 <tbody id="usageTableBody">
                     <tr>
-                        <td colspan="8">
+                        <td colspan="9">
                             <div class="loading-state">
                                 <div class="loading-spinner"></div>
                                 <div>데이터 로딩 중...</div>
@@ -894,7 +895,38 @@
     <script>
     let usageData = [];
     let cart = [];
-    let orderDataByKd = {};  // 도매상 주문량 합산 (KD코드별) - 지오영 + 수인
+    let orderDataByKd = {};
+    let preferredVendors = {};  // 약품별 선호 도매상
+
+    // 선호 도매상 표시
+    function getPreferredVendor(drugCode) {
+        const v = preferredVendors[drugCode];
+        if (!v || !v.success) return '-';
+        const recent = v.recent_vendor;
+        const most = v.most_frequent_vendor;
+        if (!recent && !most) return '-';
+        const shorten = (n) => n ? n.replace('강원','').replace('(주)','').replace('지점','').replace('약품','').substring(0,3) : '';
+        const rn = recent ? shorten(recent.vendor_name) : '';
+        const mn = most ? shorten(most.vendor_name) : '';
+        if (rn === mn && rn) return `<span style="color:#10b981" title="${most?.vendor_name}">${rn}</span>`;
+        let h = '';
+        if (mn) h += `<span style="color:#a855f7" title="최다(${most.order_count}회)">★${mn}</span>`;
+        if (rn && rn !== mn) h += `<br><span style="color:#888" title="최근">▸${rn}</span>`;
+        return h || '-';
+    }
+
+    // 선호 도매상 로드
+    async function loadPreferredVendors(codes) {
+        if (!codes || !codes.length) return;
+        try {
+            const r = await fetch('/api/order/drugs/preferred-vendors', {
+                method: 'POST', headers: {'Content-Type': 'application/json'},
+                body: JSON.stringify({drug_codes: codes, period: 365})
+            });
+            const d = await r.json();
+            if (d.success) { preferredVendors = d.results; renderTable(); }
+        } catch(e) { console.error('선호도매상 로드 실패:', e); }
+    }  // 도매상 주문량 합산 (KD코드별) - 지오영 + 수인
 
     // 초기화
     document.addEventListener('DOMContentLoaded', function() {
@@ -996,7 +1028,7 @@
         const sort = document.getElementById('sortSelect').value;
 
         document.getElementById('usageTableBody').innerHTML = `
-            <tr><td colspan="8">
+            <tr><td colspan="9">
                 <div class="loading-state">
                     <div class="loading-spinner"></div>
                     <div>데이터 로딩 중...</div>
@@ -1021,9 +1053,11 @@
                     document.getElementById('resultCount').textContent = `(${data.items.length}개)`;
                     
                     renderTable();
+                    // 선호 도매상 로드 (백그라운드)
+                    loadPreferredVendors(data.items.map(i => i.drug_code));
                 } else {
                     document.getElementById('usageTableBody').innerHTML = `
-                        <tr><td colspan="8">
+                        <tr><td colspan="9">
                             <div class="empty-state">
                                 <div class="empty-icon">⚠️</div>
                                 <div>오류: ${data.error}</div>
@@ -1033,7 +1067,7 @@
             })
             .catch(err => {
                 document.getElementById('usageTableBody').innerHTML = `
-                    <tr><td colspan="8">
+                    <tr><td colspan="9">
                         <div class="empty-state">
                             <div class="empty-icon">❌</div>
                             <div>데이터 로드 실패</div>
@@ -1048,7 +1082,7 @@
         
         if (usageData.length === 0) {
             tbody.innerHTML = `
-                <tr><td colspan="8">
+                <tr><td colspan="9">
                     <div class="empty-state">
                         <div class="empty-icon">💊</div>
                         <div>해당 기간 처방 내역이 없습니다</div>
@@ -1084,6 +1118,7 @@
                     <td class="qty-cell" style="color:var(--text-secondary);">${item.prescription_count}건</td>
                     <td class="qty-cell ${qtyClass}">${item.total_dose}</td>
                     <td class="qty-cell" style="color:var(--accent-cyan);">${getOrderedQty(item.drug_code)}</td>
+                    <td class="qty-cell" style="font-size:10px;">${getPreferredVendor(item.drug_code)}</td>
                     <td style="text-align:right;font-family:'JetBrains Mono',monospace;font-size:12px;">
                         ${formatPrice(item.total_amount)}원
                     </td>