1358 West working face is the first inclined mining face of Kailuan Qianjiaying Mining Branch, and the lower No. 7 coal seam has been mined out. The hydrological and geological conditions of 1358 West back mining face are complicated due to the influence of mining of the lower coal seam, the water-bearing layer on the roof of No. 5 coal seam and the inclined mining. According to the past experience of water control in Qianjiaying Mine and the actual hydrogeological conditions of the working face, through the over-emission of water from the top plate of the coal seam and the reasonable design of drainage prevention engineering, no water damage accident occurred during 1358 West back mining, which ensured the safe production of the mine and accumulated valuable experience for the future water control work of inclined coal seam mining.