In recent years,with the continuous development of China's economy,the development of the construction industry is also getting faster and faster,and the economic benefits that the construction industry can create are more and more recognized,and more people want to get a piece of the construction industry.However,under the latest policy issued by the government,the construction industry has gradually eliminated many enterprises with insufficient competitiveness,low business ability and backward management level under the continuous improvement and standardization of the construction market.And how to survive in the market fight,while ensuring the quality of the project,in the face of the gradual reduction of market efficiency,snatching the construction market this big cake is the concern of all construction enterprises.Follow-up With the development of modern scientific management,construction enterprises pay more and more attention to cost control.It is of great significance for construction enterprises to do a good job in project cost control of construction enterprises to reduce costs,enhance enterprise efficiency and increase market competitiveness.This paper introduces the cost of construction company project,expounds the content,importance,function,problems and solutions in construction engineering,and the concrete measures of cost control.