Based on the engineering background of the s6-5 isolated island working face in Changcun Mine, the stress distribution characteristics of the s6-5 island face in Changcun Mine were studied by Flac3D numerical simulation software. The results show that the stress of the slab in the goaf area of the s6-5 face is gradually increased after the crust compaction, and the stress concentration in the upper and lower ends of the coal face in the working face is obvious, and the crust is serious. Brokenness is low. The surface of the roof and the overburden layer of the pressure is apparently relieved. In the upper and lower sections of the protection of the coal pillar，the stress peak on the stack is concentrated obviously. The scope of the roadway pillar stress in the open cut to the face of the coal wall is larger and concentrated.