The invention discloses an information system based on a mobile phone client, that is to say, it provides a field engineering management information system based on mobile phone client, on the basis of integrating OA functions, it extends and realizes the functions of project address navigation, site attendance and site engineering management, which are of great significance to site work, enhancesthe business functions needed for specific site operation, and improves the usage rate and value of mobile phone client by site supervisors. Can let the supervision, construction, construction personnel out of the bondage of time and space, at any time and anywhere for office; mainly implemented 3A office-office personnel can at any time (anytime), anywhere (anywhere) to deal with any business-related matters (anything). In the invention, the mobile information software of the mobile phone is utilized to establish an enterprise software application system which is interconnected between the mobile phone and the computer, so as to get rid of the limitation of time and place, carry out management and communication at any time, and effectively improve the management efficiency of the enterprise.