介绍了原型化方法的基本理论 ,并结合施工进度管理系统设计开发的实践经验 ,分析了原型化方法和用例技术在实际软件系统开发中的设计策略和应用步骤 ,改进了进度控制系统的需求分析手段 ,提高了系统质量 The basic theory of the prototype method is introduced. Combined with the practical experience of the design and development of the construction schedule management system, the design strategies and application steps of the prototype method and the use case technology in the actual software system development are analyzed. The demand analysis of the progress control system is improved Means to improve the quality of the system