Abstract: To solve the problems that the mining process of island working face was influenced by rock burst, the stress distribution law under the influence of different goaf range was analyzed with FLAC numerical simulation software.The simulation results showed that the distribution of goaf area determined the distribution of support pressure, peak size and influence range; the advance support pressure on the side of goaf was higher than that on coal side, the peak position shifts to the deep part of coal body, and the supporting pressure had a wide range.Based on the above content and the actual situation on the scene, the comprehensive pressure relief technology such as flooding water to coal mine in advance, large-diameter drilling pressure relief and deep hole breaking pressure relief were put forward, which guaranteed the safe production of island working face.