Based on the fact that the distance between the No.1 working face transportation roadway of Niu’erzhuang Mine and the upper third level track yard roadway was 11～17 m, and the vertical distance was only 10 m, the working face retrieval was bound to destroy it, which led to the failure of the yard roadway to be used normally, the joint protection technology of thick coal seam top cutting and pressure relief and grouting reinforcement was proposed to protect the roadway, and the post-wall grouting (shallow hole and deep hole) technology was applied to protect the roadway in advance. Two times grouting technology was adopted to reinforce the roadway in advance, and then the top-cutting and pressure relief technology was used to cut the top of the working face transportation roadway pre-cracking, the stress state of the surrounding rock was changed, so that the working face mining area forming a "top-cutting short wall beam structure", blocking the stress transfer between the roof of the mining area and the roof of the surrounding rock, achieved the purpose of joint roadway protection.