diff --git a/backend/pmr_api.py b/backend/pmr_api.py
index 4dbbe37..99e6312 100644
--- a/backend/pmr_api.py
+++ b/backend/pmr_api.py
@@ -172,36 +172,35 @@ def get_prescription_detail(prescription_id):
             conn.close()
             return jsonify({'success': False, 'error': '처방전을 찾을 수 없습니다'}), 404
         
-        # 처방 약품 목록 (PS_sub_pharm 테이블 확인 필요)
-        cursor.execute("""
-            SELECT COLUMN_NAME 
-            FROM INFORMATION_SCHEMA.COLUMNS 
-            WHERE TABLE_NAME = 'PS_sub_pharm'
-        """)
-        sub_columns = [row[0] for row in cursor.fetchall()]
-        
-        # 약품 목록 조회
+        # 처방 약품 목록 (PS_sub_pharm + PM_DRUG.CD_GOODS JOIN)
         medications = []
-        if 'PreSerial' in sub_columns:
-            cursor.execute("""
-                SELECT *
-                FROM PS_sub_pharm
-                WHERE PreSerial = ?
-                ORDER BY 1
-            """, (prescription_id,))
-            
-            med_columns = [col[0] for col in cursor.description]
-            for row in cursor.fetchall():
-                med_dict = dict(zip(med_columns, row))
-                medications.append({
-                    'medication_code': med_dict.get('GoodsCode') or med_dict.get('PCODE') or '',
-                    'med_name': med_dict.get('GoodsName') or med_dict.get('PNAME') or '',
-                    'dosage': med_dict.get('Once_Qty') or med_dict.get('POESSION') or 0,
-                    'frequency': med_dict.get('Times') or med_dict.get('PTIMES') or 0,
-                    'duration': med_dict.get('Days') or med_dict.get('PDAY') or 0,
-                    'total_qty': med_dict.get('Total_Qty') or 0,
-                    'type': med_dict.get('PS_Type', '0')
-                })
+        cursor.execute("""
+            SELECT 
+                s.DrugCode,
+                s.Days,
+                s.QUAN,
+                s.QUAN_TIME,
+                s.PS_Type,
+                s.INV_QUAN,
+                g.GoodsName,
+                g.SUNG_CODE
+            FROM PS_sub_pharm s
+            LEFT JOIN PM_DRUG.dbo.CD_GOODS g ON s.DrugCode = g.DrugCode
+            WHERE s.PreSerial = ?
+            ORDER BY s.SUB_SERIAL
+        """, (prescription_id,))
+        
+        for row in cursor.fetchall():
+            medications.append({
+                'medication_code': row.DrugCode or '',
+                'med_name': row.GoodsName or row.DrugCode or '',
+                'dosage': float(row.QUAN) if row.QUAN else 0,
+                'frequency': row.QUAN_TIME or 0,
+                'duration': row.Days or 0,
+                'total_qty': float(row.INV_QUAN) if row.INV_QUAN else 0,
+                'type': '급여' if row.PS_Type in ['0', '4'] else '비급여' if row.PS_Type == '1' else row.PS_Type,
+                'sung_code': row.SUNG_CODE or ''
+            })
         
         conn.close()