Rubber waveform generators are widely used in impact test devices for generating shock waves. Through stretching and compressing rubber specimens, obtain the stress-strain relationship of rubber material. Build finite element model of rubber waveform generator, get the maximum static deformation and static stiffness in different forms of constitutive models and take actual tests of rubber waveform generator. Compare finite element results with the actual test results, select Arruda-Boyce model as rubber hyperelastic model. This study lay a good foundation for the design of rubber waveform generators and study of dynamic characteristics of impact test devices.