diff --git a/magic_pdf/pdf_parse_union_core_v2.py b/magic_pdf/pdf_parse_union_core_v2.py
index 29ca1351..74d93b81 100644
--- a/magic_pdf/pdf_parse_union_core_v2.py
+++ b/magic_pdf/pdf_parse_union_core_v2.py
@@ -108,6 +108,10 @@ def fill_char_in_spans(spans, all_chars):
     spans = sorted(spans, key=lambda x: x['bbox'][1])
 
     for char in all_chars:
+        # 跳过非法bbox的char
+        x1, y1, x2, y2 = char['bbox']
+        if abs(x1 - x2) <= 0.01 or abs(y1 - y2) <= 0.01:
+            continue
         for span in spans:
             if calculate_char_in_span(char['bbox'], span['bbox'], char['c']):
                 span['chars'].append(char)
diff --git a/magic_pdf/pre_proc/remove_bbox_overlap.py b/magic_pdf/pre_proc/remove_bbox_overlap.py
index 71a05721..35f96a10 100644
--- a/magic_pdf/pre_proc/remove_bbox_overlap.py
+++ b/magic_pdf/pre_proc/remove_bbox_overlap.py
@@ -70,7 +70,7 @@ def _remove_overlap_between_bboxes(arr):
                     res[i] = None
                 else:
                     keeps[idx] = False
-                drop_reasons.append(drop_reasons)
+                drop_reasons.append(drop_reason)
         if keeps[idx]:
             res[idx] = v
     return res, drop_reasons