Abstract: In order to solve the problem of high dust concentration in the driving face, which brings health and safety hazards to the operators, and to improve the dust removal efficiency of the dust removal process in the driving roadway, a new type of double air curtain dust isolation device is designed, and simulation test is carried out.The results show that after comparison of the three dust removal processes of the new double air curtain dust removal method, the traditional long pressure and short pumping dust removal method and the natural settlement method, it can be seen the dust reduction effect: double air curtain method > traditional method > natural settlement, of which the double air curtain method, at the farthest end from the headface of the roadway, the whole dust is only 35.46 mg/m³,the dust reduction efficiency reaches 92.97%;at the farthest end, the respiratory dust is only 4.62 mg/m³,the dust reduction efficiency reaches 90.84%.To a certain extent, the test device solves the defects of traditional long pressure and short pumping dust removal process, through the setting of two air curtains to produce a good isolation effect on the dust.