The ABAQUS software was used to model the bellows of super-elastic silicone material, and the finite element simulation analysis was carried out on the internal inflation pressure model. The stress, axial elongation and radial direction of different bellows wall thickness after pressure were analyzed. The effect of expansion. The simulation results show that the thicker the wall at the corrugated part of the bellows, the stronger the restraining ability of its radial and axial deformation. In the case of a thin wall, the bellows may be insufficiently restrained and cause instability.