Abstract: With the continuous development of the comprehensively mechanized mining process and the improvement of mechanization in coal mines, the dust production in the comprehensive mining working face increases significantly, which poses a serious threat to the health and production safety of underground workers.In order to reduce the dust in the comprehensive mining face, a combination of numerical simulation and on-site measurement is used to propose an air curtain dust reduction technology for the comprehensive mining face, which is tested in the 4101 comprehensive mining face on the 3# coal of Fujiayan Coal Mine.The results of practical application show that: under the action of high-speed airflow field generated by the outlet of 2 air turbines, a triangular air curtain is formed between coal mining machine and roadway, which can effectively prevent dust from entering the driver's working area; the dust concentration in the driver's working area of the coal mining machine is more than 2 000 mg/m³ before applying the dust management technology, but after applying the dust management technology, the dust concentration in the driver's working area of the coal mining machine is reduced to 300 mg/m³,and the dust concentration in the driver's working area of the coal mining machine is reduced to 300 mg/m³,which is effectively blocking and reducing dust in the coal mining process, and improving the underground working environment.