Abstract: Basing on the engineering condition of Zhaogezhuang coal mine of Kailuan mining group,adopting theoretical analysis,numerical simulation and field measurement method,the mining stress distribution in the 2337E working face buried under 1 100 m comparatively was researched and analyzed.By doing this research,the " limited-synergy effect" which explains the relationship between mining stress change and working face advancing step distance under the condition of kilometer deep shaft was got.With the increase of advancing step distance in the working face,the advanced support pressure peak,influence area and the distance of peak position to coal-wall will have corresponding increase while the increase will not surpass a stable value.