Abstract: Based on the theory of "roof cutting shortwall beam", taking the S1201-Ⅱ coal seam face of the Ningtiaota coal mine as the engineering background, the new technology of gob-side entry retaining automatically formed by roof cutting and pressure release without digging the roadway and no-pillar has been successfully tested.By radically changing the technology and equipment system of traditional longwall mining as well as automatically forming a roadway while mining, the new technology achieves digging without roadway and mining without pillar on all coal seam face of the entire panel.And based on the on-site production and engineering geological conditions, the key technical parameters of the test coal seam face are established.Also, the technology is proved to be feasible and advantageous according to the on-site production and application results.Moreover, it enjoys obvious advantages in terms of improving resource recovery rate, alleviating the burden of mining taking over and reducing stress concentration, and thus it has broad application prospects.