In view of the shortcomings of the current rolling bearing fault diagnosis methods based on data-driven and mechanism modeling,a rolling bearing digital twin virtual entity model for fatigue failure was proposed.Based on L-P fatigue failure theory,the vibration response of rolling bearing in the whole life cycle was simulated.In order to establish the virtual solid model,based on the five degree of freedom nonlinear rolling bearing vibration model and considering the influence of rolling body raceway impact force,the local defect models of rolling bearing inner and outer rings were improved,and an early fault model of rolling bearing subsurface crack was proposed,which improved the deficiency of the current research on the vibration response mechanism of rolling bearing early weak fatigue fault.Virtual entity model could be used to characterize the process from the occurrence and development of bearing fault to serious failure.The virtual model data of bearing fatigue failure were analyzed to verify the correctness of the simulation results.