In face of the fact that the layup angles of carbon fiber composites are different and the mechanical properties after molding are anisotropic, the decomposition of the materials by the method of orthogonal symmetry plane of anisotropic materials is simplified, the materials index of the main anisotropy is changed to the orthotropic index. The matching degree between the software fatigue simulation and the actual state of the equipment is improved based on the physical mechanical testing of the carbon fiber composite material sample and certain equipment is taken as a sample to carry out the software fatigue simulation and analysis.