Abstract： Objective To explore the aticlagical factar,pathagancsis,diagnosis and treatment axparicnac pentoperative diabetes insipidus and hymnatramia in sally area neoplasm.Methods 37 patients of postoperative diabetes insipidus and hypanatramia in sally area neoplasm were analysed,ratmspcx,tivaly and diagnenad by their chnic,manifestations and laboratory examination to summary effective therapy methods.Results Cerebral salt wasting syndrome(CSWS)in 27,and syndrome of inappropriate secretion of the antidinretic hormone in 10,thirty-seven cases were cured.Conclusion Sally area neoplasm do take plane complicaticns such as severe diahatcs insipidus and hypanatramia cosily after resection.but in most of which,satisfactary trcvtmant affact could be get by proper complementation salt and blood volume and proper antidiurcsis therapy.