Abstract: In this paper, we analyze the coal-rock acoustic emission and damage evolution characteristics under the uniaxial compression by means of particle discrete element program PFC (particle flow code), and establish damage evolution relationship model based on the acoustic emission cumulative frequency. The research results show that monitoring the various stages of the acoustic emission laws can predict the coal-rock internal mesoscopic crack initiation and propagation cut-through process; coal-rock damage process can be roughly divided into three stages including undamage, stable development of damage and rapid development of damage, and the macroscopic deformation and failure process has a close corresponding relation with the coal-rock damage process.