Abstract: In order to study the high level suction roadway reasonable position, according to the mining conditions and the overburden characteristics of 13-1 coal seam in Huainan mining area Liu Zhuang coal mine, by using these methods of theoretical calculation and similar simulation experiment and engineering practice, research and analysis of the high level suction roadway reasonable position and extraction effect. The results showed that 13-1 coal seam working face caving zone height is about 4 times of the mining height, fractured zone height is about 16 times of the mining height, the high level suction roadway reasonable position is about from the coal seam roof 42m. By using the similar material simulation test results to determine the high level suction roadway position is more reasonable.