Abstract: In view of the serious deformation of surrounding rock and excessive resistance of support in working face of dynamic pressure roadway in No. 2 Well of Sihe Coal Mine, the deformation mechanism and control technology of surrounding rock of dynamic pressure roadway are systematically studied by means of field monitoring and numerical simulation. The results show that the stress level of the surrounding rock increases after the roadway is affected by the excavation support and the dynamic mining pressure of the working face, and the stress imbalance on both sides and the asymmetric deformation of the side wall are serious. The deformation of the surrounding rock of the roadway can be divided into two stages: unilateral application influence and bilateral mining influence, and the deformation of the roadway is mainly due to the stress disturbance caused by mining on both sides of the working face of the main roadway in the mining area. As a result, the load-bearing performance of the roadway continues to deteriorate, and the surrounding rock repeatedly deforms and fails. Based on this, the paper proposes to implement effective control on the deformation of dynamic pressure roadway by using the technology of pre-cracking cutting top and relieving pressure. The reasonable height and Angle of cutting top and relieving pressure are 16.5 m and 60° respectively. Through the field practice, after the implementation of cutting the roof and relieving the pressure of the dynamic pressure roadway, the displacement of the top and bottom of the surrounding rock and the two sides is effectively controlled compared with that before the pressure relief, and the resistance of the support of the working face is significantly reduced, which ensures the stability of the surrounding rock of the working face dynamic pressure roadway.