Abstract: Aiming at the problems of multiple-dust source, high dust concentration and high wind speed on fully mechanized face in high gassy and outburst coal seam, put forward the idea of combination of source control and prevention and reduction. Taking theE9.10-21050 coal face as the research object, A three-dimensional dust suppression technique for fully mechanized mining face is designed, which mainly consists of coal seam water injection, coal dust source tracking spray, moving frame automatic spraying, drilling foam dedusting, return air dust control and automatic spray. And a field application was carried out on E 9.10-21050 coal face. The results show that the three-dimensional dust control technology for cutting coal, moving, drilling, transshipment and other operating points, has a dust reduction efficiency of 80%-88% for total dust and 79%-86% for respirable dust, realizing the goal of controlling dust effectively on fully mechanized coal mining face in high gassy and outburst coal seam.