Based on the influence of the mining length change of 250107-1 fully mechanized mining face in Huating Coal Mine on the normal production of the face, through the analysis, it is concluded that according to the length of the standardized inclined face at the position of the maximum elevation difference of the mining roadway in the face, the design of the cut, the determination of the number of hydraulic support and the middle slot of scraper conveyor are the prerequisites for realizing the equal mining length mining of the face ; based on the spatial geometric relationship between the elevation difference of the mining roadway, the mining length of the face and the pseudo-inclination adjustment distance Δl, the quantitative relationship between the pseudo-inclination adjustment distance and the dip angle of the face is derived. In order to effectively solve the influence of face mining length change on the normal production of face, combined with the engineering practice experience of 250107-1 fully mechanized mining face in Huating Coal Mine, this paper expounds in detail the slope adjustment and slope correction mining technology of cutting coal.