It is a key for mine safe production to ensure the stability of overlying rock strata in stope. The effective support design of stope can be made out only if the moving scope of overlying strata is determined. The numerical simulation of whole moving process of overlying strata with the advance of stope face in a certain mine has been carried out by using Rock Failure Process Analysis system (RFPA~(2D)). Through the numerical simulation, the some valuable information about the movement of overlying strata has been obtained, and the moving scope of overlying strata has been determined. These provide the bases for controlling the roof failure and reasonably designing the support of stope.