It is a key link to realize development plan of western traffic construction of China's "The Eleventh Five-year Plan"  by accurately and objectively post-evaluating the social and economic benefits of research results of traffic science and technology projects and strengthening the management of project achievements and the transformation of them to productivity. Based on the determination of the performance evaluation implementation flow of the traffic science and technology projects, and standing at the post-evaluation perspectives analyzing the social and economic benefits, this paper builds relatively perfect project evaluation criteria and establishes the systematic framework using Microsoft Visual Basic 6.0 and Access 2003. It fully realizes the scientificalness, effectiveness and rationality of the traffic science and technology projects evaluation, promoting the decision process much more programmed and scientific.