Abstract: In the high gas conditions, the speed of excavation will directly affect the normal replacement of mining working face. Taking excavating working face of Yuwu Coal Company as research objection, affecting factors which directly affect the rapid excavation of large section seam roadway are found through analyzing the excavating working face, and improving methods which include replacing temporary support and optimizing the excavation construction technology and so on are also brought forwards. At same time, each process time is standardized by using theory of industrial engineering management to enhance excavation speed of the seam roadway.