Abstract: Although as a basic course, engineering, mechanics occupies a very important position in the professional course system, but the teaching effect of the mechanics course is not very good,. Limited by the teaching conditions and the student-level, many teaching methods are not adequate. This paper analyzes practical applications of the mechanics courses in the light of the contest and the three-stage teaching method of mechanics course is established, guided by National Structure Design Contest for College Students, with good results in practice. Key words engineering mechanics course, structure design contest, analyzed practical application, three-stage teaching method.