The Application of Prototyping Method in CSMS Sheng Keshu: Assoc.Prof.,School of Civil Engineering and Acrchitecture,WUT,Wuhan 430070,China. \ Meng Yan\ Liu WeiguoIn this paper, we introduce the basic theory of prototyping method based on the experience we obtained from the development of Construction Schedule Management System (CSMS). We discuss the strategy and the procedure of design and application of prototyping method in practical software development. It has proved that the employment of Prototyping method can improve the quality of system analysis and development.prototyping method;\ schedule management;\ system analysis