diff --git a/backend/templates/admin_rx_usage.html b/backend/templates/admin_rx_usage.html
index 4e7c534..f11d6fc 100644
--- a/backend/templates/admin_rx_usage.html
+++ b/backend/templates/admin_rx_usage.html
@@ -727,6 +727,7 @@
                 </select>
             </div>
             <button class="search-btn" onclick="loadUsageData()">🔍 조회</button>
+            <button class="search-btn" style="background: linear-gradient(135deg, #a855f7, #7c3aed);" onclick="openBalanceModal()">💰 도매상 잔고</button>
         </div>
 
         <!-- 통계 -->
@@ -2151,5 +2152,205 @@
             </div>
         </div>
     </div>
+
+    <!-- 잔고 조회 모달 -->
+    <div class="order-modal" id="balanceModal">
+        <div class="order-modal-content" style="max-width:500px;">
+            <div class="order-modal-header" style="background:linear-gradient(135deg, #7c3aed, #a855f7);">
+                <h3>💰 도매상 잔고 현황</h3>
+                <button class="order-close" onclick="closeBalanceModal()">✕</button>
+            </div>
+            <div class="order-modal-body" id="balanceContent">
+                <div class="loading-state">
+                    <div class="loading-spinner"></div>
+                    <div>잔고 조회 중...</div>
+                </div>
+            </div>
+            <div class="order-modal-footer">
+                <button class="btn-order-test" onclick="loadBalances()">🔄 새로고침</button>
+                <button class="btn-order-real" onclick="closeBalanceModal()">닫기</button>
+            </div>
+        </div>
+    </div>
+
+    <style>
+    /* 잔고 모달 스타일 */
+    .balance-grid {
+        display: flex;
+        flex-direction: column;
+        gap: 16px;
+    }
+    .balance-card {
+        background: var(--bg-secondary);
+        border-radius: 12px;
+        padding: 20px;
+        border: 1px solid var(--border);
+        display: flex;
+        align-items: center;
+        gap: 16px;
+    }
+    .balance-card.loading {
+        opacity: 0.6;
+    }
+    .balance-card.error {
+        border-color: var(--accent-rose);
+        background: rgba(244, 63, 94, 0.1);
+    }
+    .balance-icon {
+        width: 48px;
+        height: 48px;
+        border-radius: 12px;
+        display: flex;
+        align-items: center;
+        justify-content: center;
+        font-size: 24px;
+        flex-shrink: 0;
+    }
+    .balance-icon.baekje { background: linear-gradient(135deg, #d97706, #f59e0b); }
+    .balance-icon.geoyoung { background: linear-gradient(135deg, #0891b2, #06b6d4); }
+    .balance-icon.sooin { background: linear-gradient(135deg, #7c3aed, #a855f7); }
+    
+    .balance-info {
+        flex: 1;
+        min-width: 0;
+    }
+    .balance-name {
+        font-size: 14px;
+        font-weight: 600;
+        color: var(--text-primary);
+        margin-bottom: 4px;
+    }
+    .balance-detail {
+        font-size: 11px;
+        color: var(--text-muted);
+    }
+    .balance-amount {
+        text-align: right;
+    }
+    .balance-value {
+        font-size: 22px;
+        font-weight: 700;
+        font-family: 'JetBrains Mono', monospace;
+    }
+    .balance-value.baekje { color: #f59e0b; }
+    .balance-value.geoyoung { color: #06b6d4; }
+    .balance-value.sooin { color: #a855f7; }
+    
+    .balance-label {
+        font-size: 10px;
+        color: var(--text-muted);
+        text-transform: uppercase;
+        letter-spacing: 0.5px;
+    }
+    .balance-total {
+        background: linear-gradient(135deg, rgba(168, 85, 247, 0.1), rgba(6, 182, 212, 0.1));
+        border-radius: 12px;
+        padding: 20px;
+        text-align: center;
+        margin-top: 8px;
+    }
+    .balance-total-label {
+        font-size: 12px;
+        color: var(--text-muted);
+        margin-bottom: 8px;
+    }
+    .balance-total-value {
+        font-size: 28px;
+        font-weight: 700;
+        font-family: 'JetBrains Mono', monospace;
+        background: linear-gradient(135deg, #a855f7, #06b6d4);
+        -webkit-background-clip: text;
+        -webkit-text-fill-color: transparent;
+    }
+    .balance-updated {
+        text-align: center;
+        font-size: 11px;
+        color: var(--text-muted);
+        margin-top: 12px;
+    }
+    </style>
+
+    <script>
+    // ──────────────── 잔고 조회 ────────────────
+    function openBalanceModal() {
+        document.getElementById('balanceModal').classList.add('show');
+        loadBalances();
+    }
+    
+    function closeBalanceModal() {
+        document.getElementById('balanceModal').classList.remove('show');
+    }
+    
+    async function loadBalances() {
+        const content = document.getElementById('balanceContent');
+        content.innerHTML = `
+            <div class="loading-state">
+                <div class="loading-spinner"></div>
+                <div>잔고 조회 중...</div>
+            </div>`;
+        
+        const wholesalers = [
+            { id: 'baekje', name: '백제약품', icon: '💉', api: '/api/baekje/balance' },
+            { id: 'geoyoung', name: '지오영', icon: '🏭', api: '/api/geoyoung/balance' },
+            { id: 'sooin', name: '수인약품', icon: '💊', api: '/api/sooin/balance' }
+        ];
+        
+        const results = {};
+        let totalBalance = 0;
+        
+        // 병렬로 조회
+        await Promise.all(wholesalers.map(async (ws) => {
+            try {
+                const resp = await fetch(ws.api, { timeout: 30000 });
+                const data = await resp.json();
+                results[ws.id] = data;
+                if (data.success && data.balance) {
+                    totalBalance += data.balance;
+                }
+            } catch (err) {
+                results[ws.id] = { success: false, error: err.message };
+            }
+        }));
+        
+        // 결과 렌더링
+        let html = '<div class="balance-grid">';
+        
+        wholesalers.forEach(ws => {
+            const data = results[ws.id];
+            const isError = !data.success;
+            const balance = data.balance || 0;
+            const prevBalance = data.prev_balance || data.prev_month_balance || 0;
+            
+            html += `
+                <div class="balance-card ${isError ? 'error' : ''}">
+                    <div class="balance-icon ${ws.id}">${ws.icon}</div>
+                    <div class="balance-info">
+                        <div class="balance-name">${ws.name}</div>
+                        <div class="balance-detail">
+                            ${isError 
+                                ? `❌ ${data.error || '조회 실패'}` 
+                                : `전월/전일: ${prevBalance.toLocaleString()}원`}
+                        </div>
+                    </div>
+                    <div class="balance-amount">
+                        <div class="balance-value ${ws.id}">
+                            ${isError ? '-' : balance.toLocaleString()}
+                        </div>
+                        <div class="balance-label">현재 잔고</div>
+                    </div>
+                </div>`;
+        });
+        
+        html += `
+            <div class="balance-total">
+                <div class="balance-total-label">총 미수금</div>
+                <div class="balance-total-value">${totalBalance.toLocaleString()}원</div>
+            </div>
+            <div class="balance-updated">🕐 ${new Date().toLocaleString('ko-KR')}</div>
+        </div>`;
+        
+        content.innerHTML = html;
+    }
+    </script>
 </body>
 </html>