Abstract: To research the creep mechanics of chemical corrosion on the shale, we carried out chemical creep coupling test and numerical simulation of chemical-creep coupled shale corrosion by taking COMSOL as platform. The results show that the stronger the acidity or alkalinity, the shorter the time for the ion concentration to reach a dynamic equilibrium state, the more internal voids appear, the easier the temperature diffusion and higher temperature gradient stress; the degree of corrosion of acidic solution to shale is more severe than that of alkaline solution, and higher temperature gradient stress is produced, which affects the creep characteristics of rock; the degree of corrosion of acid solution on shale is more severe than that of alkaline solution, and it also has a greater influence on the degree of temperature gradient change and the creep characteristics of shale. The results of numerical simulation and creep test are consistent.