diff --git a/backend/app/services/pdf_generator_service.py b/backend/app/services/pdf_generator_service.py
index 124746a..3898d47 100644
--- a/backend/app/services/pdf_generator_service.py
+++ b/backend/app/services/pdf_generator_service.py
@@ -412,9 +412,9 @@ class PDFGeneratorService:
 
             # Filter text regions to avoid overlap with tables/images
             regions_to_avoid = images_metadata
-            table_count = len([img for img in images_metadata if 'table' in img.get('image_path', '').lower()])
+            table_count = len([img for img in images_metadata if img.get('type') == 'table'])
 
-            logger.info(f"過濾文字區域: {len(regions_to_avoid)} 個區域需要避免")
+            logger.info(f"過濾文字區域: {len(regions_to_avoid)} 個區域需要避免 (含 {table_count} 個表格)")
 
             filtered_text_regions = self._filter_text_in_regions(text_regions, regions_to_avoid)
 
@@ -450,7 +450,8 @@ class PDFGeneratorService:
                 page_image_regions = [
                     img for img in images_metadata
                     if img.get('page') == page_num - 1
-                    and 'table' not in img.get('image_path', '').lower()
+                    and img.get('type') != 'table'
+                    and img.get('image_path') is not None  # Skip table placeholders
                 ]
 
                 # Draw in layers: images → tables → text