Abstract: By analyzing lithologic characters of coal seam roof and floor and stress environmental characteristics of crossheading in a coal mine 4602 island face roadway, combined with the supporting status of the mine, by means of theoretical analysis and numerical simulation, we proposed high strength and high preload yield support design thinking, and conducted anchor net support reform for return air face. Field test results show that the kind of program achieves a stable support under island face mining with high stress environment.