Abstract: Surface subsidence caused by underground mining in metal mines poses a serious threat to mining operations, surface vegetation, and surrounding residents.This study, based on the subsidence at Qianjiaping Vanadium Mine, employs a graphical method to predict the range of surface subsidence induced by underground mining in metal mines.The predicted results are compared and analyzed with on-site observations to verify the accuracy and applicability of the method.The formation factors and process of subsidence are analyzed by combining the actual conditions of the mine with structural mechanics theory, thereby exploring the formation mechanism of subsidence.The research shows that the graphical method can objectively, accurately, and simply reflect and predict the range of surface subsidence.The concepts of predicted subsidence range and main subsidence range are proposed, and the graphical method is recommended as a reliable approach for predicting subsidence.The analysis indicates that factors such as the F12 fault, lithology, and mining activities contribute to the subsidence at the Mine, with the F12 fault and mining activities being the primary influential factors.It is concluded that the subsidence at the Mine can be divided into three stages: pressure arch formation, fault deformation, and cantilever failure, with these stages sequentially leading to mine subsidence.