Abstract: Inclined longwall mining face will become very unstable due to the large dip of working face and the influence of coal gangue and equipments weight and other factors in depression mining, which is prone to many safety problems, and seriously threats to normal production of the face. We anlyzed the causes of safety risks in inclined longwall large dip angle depression mining condition, identified the factors and occurrence characters of safety risks, then puts forward the basic safety hazard control techniques. Finally, we carried on engineering applicationin at Chensilou Mine 21110 mechanized mining face, and achieved good effect.