Abstract: The purpose of this study is to investigate the mechanism of formation of heave in high stress soft rock roadway and its control technology to improve the level of production safety in deep mines.Through theoretical analysis, numerical simulation and engineering practice, we systematically explored the mechanical characteristics of the heave of high-stress soft rock roadway, the laws of stress distribution, and the influence of surrounding rock's lithology on the heave.The results showed that the heave of the high-stress soft rock roadway is the result of a combination of stress distribution, plastic deformation, time effects and nonlinear deformation, where the surrounding rock's lithology, especially the clay mineral content, has a significant influence on the development of the heave.Based on an in-depth understanding of the heave mechanism, a multidimensional control technology system including pressure relief technology, reinforcement technology and water prevention technology has been proposed.Practice has proved that blasting pressure relief can effectively change the stress distribution, anchor(cable) reinforcement can significantly improve the stability of the floor, and water control measures can slow the development of heave.