Abstract: According to the situation and based on the simulation and analysis of the dust distribution law in forced-exhaust ventilation system, the closed-end dedusting system by high pressured air curtain in fully mechanized driving face is put forward. The system using dust control principle of air curtain can effectively control the dust caused by driving machine cutting coal and rock in front of the driver. With high effective dedusting fan and the reasonable setting of the vacuum port, it can remarkably reduce the dust concentration of the position of driver and other working areas.