Abstract: Taking the mechanical mechanism of folding structure and its influence on cracking zone of roadway surrounding rock and dynamic pressure as research emphases, mine pressure theory, in-situ acoustic measurement and numerical simulation and other methods are used to carry out the mechanical analysis on the folding structures of transport roadway of 3200 working face in Tianzhu Yaojie Coal Mine. Combined the acoustic test results of the surrounding rock fracture range of coal roadway, FLAC^3D software was used to simulate the three-dimensional distribution of stope mine pressure with folding structure and mechanical response of roadway surrounding rocks under dynamic disturbance. The study shows that different parts of the fold correspond to different stress state, among them, the tectonic stress in the synclinal part is the largest and the dynamic pressure disaster is the most likely to occur, followed by folded wings of tectonic stress, and anticline site is the smallest; the loose range of coal roadway is the largest at the synclinal part, followed by the transition section, and the anticlinal part is the smallest; the abutment pressure is more concentrated in front of the coal wall of coal roadway in syncline area, roof subsidence displacement is the biggest and roadway deformation and the plastic failure scope are the largest under the same degree of dynamic disturbance, and the possibility of roof collapse and dynamic pressure disasters is also the greatest.