Abstract: Maoping Tungsten Ore is a gently inclined extremely thin ore body, which is mined by comprehensive mining method, with low recovery rate and serious resource loss and waste.Based on the mechanical parameters and evaluation results, the maximum allowable exposure area of the stope is comprehensively evaluated by using Mathews stability chart method, span chart method, Barton formula and other methods, so as to provide support for the selection of mining methods and the optimization of stope structural parameters, so as to maximize resource recovery.