需求分析说明书是为软件的开发者能更好的理解开发的需求，避免由于对问题认识的不清或错误理解而增加更多的开发成本。需求分析是软件系统生存期中定义阶段的最后一个步骤。是作为整个软件开发范围的指南，是软件开发人员开发出正确的符合用户要求的软件的重点。是为明确软件需求、安排项目规划与进度、组织软件开发与测试，撰写本文档该文档将最终交给软件具体开发人员进行具体的开发，其针对的对象是软件开发人员。-Demand analysis of the manual is for software developers to better understand the development of demand, to avoid confusing or misinterpreted due to the understanding of the problem while adding more development costs. The needs analysis is the last step in the lifetime of a software system definition phase. As a guide to the scope of the entire software development, software developers developed the software focused on user requirements. Order to clarify the software requirements, arrangements for project planning and progress, the organization of software development and testing, writing of this document This document will eventually be handed over to software developers specific development, targeted at software developers.