The article based on Construction and Maintenance of Automobile Chassis, combining course highlights, and conducted a research on evaluation system of specialized courses for automobile. It presented a trinity evaluation system meaning the combination of knowledge, skill and attitude, as well as its structure, according with project teaching requirements. This article focused on difficulties on the evaluation, including assessment and evaluation in practical teaching process, had some positive attempts in practice, and finally achieved good results. It has some reference meaning to the reform of specialized courses, especially of course evaluation system.