Abstract: Due to the large inclined angle,thick coal seam of steep-inclined coal seam in Huainan Lizuizi coal mine,the control of roof and coal wall is difficult to ensure the safety of mining.Huainan mining group combined with other units to study comprehensive mechanization,safe and efficient mining technology,equipment and safety measures for steep-inclined thick seam,which is tested in 3232(3) working face of Lizuizi coal mine.The excellent result of the highest monthly production of about 50 000 t with no safety accidents is achieved.