Abstract: The stope structural parameters，mining and filling sequence selection of gently inclined，medium and thick broken phosphate ore bodies in Yichang area are difficult problems in mining design.In allusion to the trip and subsequent filling mining method under complicated geological conditions in Yichang area，we analyzed the relationship between the fault structure and the principal stress field，and carry out the rock mechanics experiment.Based on the multi software coupled modeling technology，the stress field and stope structure in the mining area under complex conditions are simulated and analyzed.Through the simulation analysis of different strip parameters and mining process，the results show that both the stress and displacement increase approximately linearly with the increase of stope width，while the rock strength decreases gradually，and the rock mass’s failure modes are tensile failure of roof and shear failure of pillar.In addition，the support capacity of pillar can be effectively improved by adopting the mining sequence of the ″two stope panels″，and the stability of surrounding rock is significantly enhanced after stoping and filling.The results can provide theoretical guidance for stope layout of similar mines.