Earned time:a new optimal method of project schedule performance evaluation based on earned value

The Earned Value Management methodology is a very important and systematic technique that evaluates project performance.This paper studies the disadvantages and limitations of traditional earned value method while evaluating the project Schedule Performance from the application point of view based on the introduction of the traditional earned value management method,and puts forward a performance evaluation method called Earned Time method.It corrects the deviation from traditional earned value method when evaluating the project Schedule Performance,and all the information needed comes form the traditional earned value management.