Abstract: In order to solve the problems of mechanical injury risk and large coal dust at the transfer point in the operation of SGW-40T scraper conveyor used in 18206 fully mechanized mining face of Shaping Coal Industry, combined with the structural characteristics of scraper conveyor, through the investigation and analysis of coal dust source and mechanical injury risk source, a fully enclosed dust reduction and protection device was designed and applied. The practice shows that after the application of the device, the personnel input is reduced, the labor intensity of the workers is reduced, the hidden danger of mechanical injury is avoided, and the dust concentration is reduced by 47% ~ 63%. The effect is remarkable, 安and the facility provides experience for similar situations.