Abstract: In order to solve the problem of high coal tunneling ratio and low extraction rate in the conventional leaving coal pillar method, Tangshangou Coal Mine applies the technology of gob-side entry retaining, and adopts 350 kN of high constant resistance and large deformation NPR cable support material and the assembled blasting equipment to carry out pressure relief by roof cutting and determine supporting parameters, which reduces the stress concentration phenomenon in the roadway and solves the support problem of pressure relief by roof cutting in gob-side entry retaining in the hard roof. The results show that the problems of the waste of resources, the mining connection stress and the high cost of the maintenance of the roadway have been solved with the technology in Tangshangou Coal Mine, which achieves good economic and social benefits.