在项目管理尤其是工程项目中,我们有时从各方面得来的信息和数据很难了解进度和费用的综合关系,而挣值法可以较好地解决这样的问题。用挣值法进行项目费用/进度综合控制的方法在有的书中又被称为赢得值原理,这种方法可以克服已往通常采用的进度和费用分开进行控制的缺点。 In project management, especially in engineering projects, we sometimes find it hard to understand the comprehensive relationship between progress and cost through various aspects of information and data. The Earned Value Law can solve such problems. The method of using EVC for project cost / progress control is also known in some books as the principle of earning value, which overcomes the shortcomings of controlling the cost and expense of what has been commonly used in the past.