Abstract: The goaf produced during the underground mining process will cause surface deformation, different mining processes and mining methods have different effects on the extent and impact of the surface.A comparative study of various surface deformation prediction methods, using numerical simulation method to analyze the ground surface of a copper mine during mining, obtain the deformation law of the building surface during mining, and analyze the scope and size of the stability of buildings, combining relevant specifications for discrimination and demonstration, the method of arranging the monitoring points on the numerical can effectively and independently analyze the surface changes of each building where the research needs to be conducted, at the same time, it can get a lot of relevant data.The method of arranging the monitoring points on the numerical model has certain reference value for the stability analysis of the surface buildings of similar mines.