Objective To evaluate the biomechanical properties of personalized titanium alloy short femoral prosthesis by finite element analysis. Methods Based on the validated femoral finite element model, the base of the femoral neck was simulated, and by inserting different short femoral prostheses, the SMF stem model (model A), BE 1 stem model (model B), MINI stem (model C) and personalized stem model (model D) were established respectively. The same loads and constraints were applied to the four groups of models, the Von Mises stress distribution and deformation between the models were calculated and analyzed, and the mechanical stability of each model was compared. Results The deformation of all models was smaller than that of physiological state of femur. The deformation of model B is close to that of model C, and model A is close to that of model D. The maximum stress peak of model C is higher than that of other models, reaching 95.55MPa. The overall stress trend is model C > model b > model d > model a > physiological state. Conclusion The stress peak and distribution of personalized short femoral stem are similar to that of SMF stem, the stress distribution is reasonable, the stress shielding of the proximal femur is small, the overall deformation and shear stress of the prosthesis is minimum, and its effectiveness and stability meet the requirements of human biomechanics, which can provide reference for Joint Surgeons and technical staffs.