The mesh was overlaid on the defect, continuously monofilament nonabsorbable suture was used to fix the mesh on the edge of the defect and the mesh must be overlapped 2 cm on fascia abdominal layer and fixed by suture. 网片用单丝不吸收缝线连续缝合固定在缺损边缘,网片必须超过缺损边缘2cm。