Abstract: On the background of 32205 island coalface in Huainan mining area, stress distribution characteristics of island coalface was analyzed by numerical simulation software FLAC3D. Analysis results indicate that the stress of the coalface is concentrated on both sides of the goaf after the formation of the island coalface. Before the roadway excavation, compared the distribution of surrounding rock stress under different coal pillar width, to determine the reasonable width of coal pillar is 7 m. During the stoping, the peak bearing pressure of the coalface increases first and then decreases with the advancing distance. According to the concrete conditions of the coalface to strengthen the support, the field measurement results show that the deformation of the 32205 coalface is small, which can meet the requirements of safety production.