Abstract: Taking Wulan Coal Mine of Shenhua Ningxia Coal Industry Group as an example, we carried out industry test of fast gob-side entry retaining without coal pillar in Y pattern ventilation manner, as well as discussed the working face gas control under the technical system support. The results prove that using Y type ventilation can solve the problem of gas accumulation and overrun in upper corner, can less dug a tunnel, decrease the outburst danger, reduce the cost and improve safety after the implementation of the gob-side entry retaining. Taking advantage of the retained roadway to extract the relief gas from the gob and construct drilling toward next section working face to remove outburst, the problem of long reserve time in removing outburst at working face was solved, which relieves the tense situation of mining-excavation relay. Through the pressure relief and extraction in protection layer twice, it eliminated the hazard of coal outburst, reduced the coal seam gas content, eliminated the loss of protective coal seam, improved the recovery rate of resource.