Taking a two degree of freedom car vibration system as a research object, this paper solved the mathematical model and differential equation of the vibration system through analyzing the vibra- lion form and loading condition of automotive suspension. The corner B and centroid displacement X of automotive suspension were solved in the Matlab program. In addition, Matlab software gave the im- age result of response of vibration system. Both the brief solution program and the accurate image data which corresponded with vibration theory showed the feasibility and superiority during solving these re- sponses of mechanical vibration system. Thereby, this research provided an easy and effective method to solve the response of eeneral mechanical vibration system with.