diff --git a/backend/app.py b/backend/app.py
index 70e0841..362563f 100644
--- a/backend/app.py
+++ b/backend/app.py
@@ -5070,7 +5070,7 @@ def api_admin_pos_live_detail(order_no):
         mssql_conn = mssql_engine.raw_connection()
         cursor = mssql_conn.cursor()
         
-        # 품목 상세 조회 (바코드 포함)
+        # 품목 상세 조회 (바코드 포함 - CD_GOODS 또는 CD_ITEM_UNIT_MEMBER에서)
         cursor.execute("""
             SELECT
                 S.DrugCode AS drug_code,
@@ -5078,7 +5078,9 @@ def api_admin_pos_live_detail(order_no):
                 S.SL_NM_item AS quantity,
                 S.SL_NM_cost_a AS unit_price,
                 S.SL_TOTAL_PRICE AS total_price,
-                G.Barcode AS barcode
+                COALESCE(NULLIF(G.Barcode, ''), 
+                    (SELECT TOP 1 CD_CD_BARCODE FROM PM_DRUG.dbo.CD_ITEM_UNIT_MEMBER WHERE DrugCode = S.DrugCode)
+                ) AS barcode
             FROM SALE_SUB S
             LEFT JOIN PM_DRUG.dbo.CD_GOODS G ON S.DrugCode = G.DrugCode
             WHERE S.SL_NO_order = ?
@@ -5087,9 +5089,14 @@ def api_admin_pos_live_detail(order_no):
         
         rows = cursor.fetchall()
         items = []
+        seen_drugs = set()  # 중복 제거용
         for row in rows:
+            drug_code = row[0]
+            if drug_code in seen_drugs:
+                continue
+            seen_drugs.add(drug_code)
             items.append({
-                'drug_code': row[0],
+                'drug_code': drug_code,
                 'product_name': row[1],
                 'quantity': int(row[2]) if row[2] else 0,
                 'unit_price': float(row[3]) if row[3] else 0,