1 GENERAL DATA Case condition:Famle,aged 35 years old,craninal bone repair was performed on May 1998.deficiency of cranial 5 cm× 5 cm,region:tempora and parietal area.Operative time:type of operation is II type repair,repair material was fixed with double size 7 silk,and moulded under local intensified anesthesin.Wound were duched with gentamycin sulfate liquid,drain was laid,removed on next day.Secondary operation:Result of exploration(leading to pain):subcutaneous hydrops.