Abstract: The island coal pillar will suffer from the pressure transfer from the overlying high roof, resulting in an unusually high level of static load concentration in the area of the island coal pillar.Aiming at the extremely high impact risk faced by the extra-thick island coal pillar roadway in Qingciyao Coal Mine, FLAC^3D numerical computation software is used as an analytical tool to investigate the influence of different sizes of roadway isolation coal pillars on the surrounding stress state.The results of the study show that the size of the island coal pillar should be set above 200 m, which can effectively alleviate the stress concentration phenomenon.After determining the optimal size of the coal pillar, the blasting pressure relief technology was adopted and combined with a variety of support means to put forward a reinforcing support program to enhance the overall bearing capacity of the roadway.In order to verify the practical effect of the above theoretical analysis and engineering measures, industrial tests were conducted in Qingciyao coal mine.The test results show that the blasting pressure relief and reinforcing support measures demonstrate good management effect, which effectively guarantees the safety of the anti-burst of the main road of the extra-thick island coal pillar during the final mining period of the working face.