diff --git a/backend/app.py b/backend/app.py
index 3b26ab8..e7cf0a3 100644
--- a/backend/app.py
+++ b/backend/app.py
@@ -5862,20 +5862,25 @@ def api_replace_product_image(barcode):
         except Exception as e:
             return jsonify({'success': False, 'error': f'이미지 처리 실패: {str(e)}'}), 400
         
-        # SQLite 업데이트
+        # SQLite 업데이트 (기존 값 유지)
         db_path = os.path.join(os.path.dirname(__file__), 'db', 'product_images.db')
         conn = sqlite3.connect(db_path)
         cursor = conn.cursor()
         
-        cursor.execute("""
-            UPDATE product_images 
-            SET image_base64 = ?, thumbnail_base64 = ?, image_url = ?, 
-                status = 'manual', error_message = NULL, updated_at = datetime('now')
-            WHERE barcode = ?
-        """, (image_base64, thumbnail_base64, image_url, barcode))
+        # 기존 레코드 확인
+        cursor.execute("SELECT product_name, drug_code FROM product_images WHERE barcode = ?", (barcode,))
+        existing = cursor.fetchone()
         
-        if cursor.rowcount == 0:
-            # 레코드가 없으면 새로 생성
+        if existing:
+            # 기존 레코드 있으면 이미지만 업데이트 (product_name, drug_code 유지)
+            cursor.execute("""
+                UPDATE product_images 
+                SET image_base64 = ?, thumbnail_base64 = ?, image_url = ?, 
+                    status = 'manual', error_message = NULL, updated_at = datetime('now')
+                WHERE barcode = ?
+            """, (image_base64, thumbnail_base64, image_url, barcode))
+        else:
+            # 레코드가 없으면 새로 생성 (product_name은 barcode로 임시 저장)
             cursor.execute("""
                 INSERT INTO product_images (barcode, image_base64, thumbnail_base64, image_url, status, product_name)
                 VALUES (?, ?, ?, ?, 'manual', ?)
diff --git a/backend/templates/admin_product_images.html b/backend/templates/admin_product_images.html
index efac690..e3abe8d 100644
--- a/backend/templates/admin_product_images.html
+++ b/backend/templates/admin_product_images.html
@@ -504,7 +504,7 @@
                                 <span class="status ${item.status}">${getStatusText(item.status)}</span>
                                 <div class="actions">
                                     <button class="btn btn-secondary btn-sm" onclick="viewDetail('${item.barcode}')">상세</button>
-                                    <button class="btn btn-primary btn-sm" onclick="openReplaceModal('${item.barcode}', '${escapeHtml(item.product_name)}')">교체</button>
+                                    <button class="btn btn-primary btn-sm" data-barcode="${item.barcode}" data-name="${item.product_name || ''}" onclick="openReplaceModal(this.dataset.barcode, this.dataset.name)">교체</button>
                                     <button class="btn btn-danger btn-sm" onclick="deleteImage('${item.barcode}')">삭제</button>
                                 </div>
                             </div>