At this artictle's beginning through analyse the present situation of our home construction market and the problems that we must to face.I want to emphasis the importance of cost management to our construction enterprise.Then through to analyse the problem that emerged from our traditional cost management system,I want to find several shortcomings.Next,by introduce several corresponding forigen popular theories and ideas;I try to provide several efficient sloutions for our cost management.These theories and methods mainly include: carry out all process and detail cost control;establish a series of goal which can be assessed and checked by date;enforce institution of assessement.Reward and punishment;differentiate duty and authority for every department of enterprise;To establish a efficient information system first.