Abstract: The studies on the micro damage mechanism and stochastic damage model are reviewed. Furthermore, the advances in researches on the stochastic damage model of concrete by the team of authors are introduced as well. The micro damage mechanism analysis was obtained by taking into account mode-Ⅱ microcracks, the stochastic damage model (the fiber bundle-irreversible chain model) was proposed and verified by experiments, and an X-ray computed tomography method for the damage quantification of concrete under compression was developed. Additionally, some related conclusions are drawn.