Abstract: In order to improve upper corner gas control effect at high strength mining working face of high gas coal mine, we developed directional dragging tube technology in upper corner. Using the method of theoretical analysis, we research gas accumulation mechanism in the single U-type ventilation conditions at the corner, reform traditional buried pipe drainage technology, transform buried pipe static drainage mode in the upper corner to dragging tube dynamic drainage mode, did engineering test at 15101 working face of the Zuoquan Xinshun Coal Mine. The results show that: the directional drag pipe drainage technology at the upper corner could realize directional dynamic adjustment of drainage port; the best extraction position is 2.4 m from the floor (vertical distance), and 1.57 m along the inclined direction from the air return roadway (horizontal distance), 17.4 m along the strike deep mined-out area (portrait distance); it realized the gas concentration reduced to 0.57% after engineering test from 0.72% before engineering test at the corner of 15101 working face in Xinshun Coal Mine and achieved ideal gas control effect.