Abstract: Based on the finite element analysis as well as the stiffness calculation of rubber vibration isolator, combined with the relation between rubber hardness and rubber mechanical constant symbolized by C10and C01, this paper introduces a flow chart for rubber vibration isolator design and development, and an application instance has been given. The rubber hardness were reversely designed for a fixed stiffness isolator from the flow chart, by which the design efficiency of the rubber vibration isolator is enhanced.