Abstract: Through the study of gas drainage data in 32₂11(1) fully mechanized working face and the establishment of parameter coupling of model system, the gas prevention technology in slicing mining fully mechanized working face of Ruqigou thick coal seam is proposed. During the mining period of fully mechanized face, comprehensive measures of combining gas drainage, exhauting air and gas drainage roadway with exhauster are adopted, which ensures the safety of 32₂11(1) fully mechanized working face during the mining process, and achieves good results.