With the promotion of Internet information technology,more and more construction enterprises have gradually begun to combine cost management with information technology,hoping to achieve a fine management mode of cost management through the use of information technology,so as to improve the profit margin of enterprises.According to the survey,there are some problems in the early stage of using cost informatization in construction enterprises,such as data confusion,imperfect process system,excessively mechanized operation process of information system,and lack of reasonable execution process management.Based on the analysis of common problems,this paper puts forward the optimization strategy:when construction enterprises use information technology to manage cost,they should first formulate a sound management system and a friendly operation mode that strengthens man-machine interaction,standardize the compilation rules and maintenance methods of basic database to strengthen the collation of basic database,and improve the management of cost information technology according to the operation process and mode of enterprise information system.The use of information technology to gradually improve the efficiency of cost management and fine management objectives.