In view of the difficult problem of dust prevention and control in large mining height working face, the treatment idea of dust sourcing-zoning-classification in coal working face was proposed. Based on the field measurement analysis of dust distribution characteristics in coal working face, dust sources in coal working face were divided into shearer cutting area, hydraulic support following machine moving area, scraper conveyer transfer area and re-turn air roadway area. According to the distribution characteristics and treatment requirements of dust in different areas, the treatment was carried out by different sources, zones and stages. By optimizing the inner and outer spray design of shearer, the range and atomization effect of the spray device are improved effectively. Through the de-velopment of AAZ-LNN nozzle applied in the hydraulic support, combined with the negative pressure coil suction dust collector and direct dust devices between hydraulic supports, the dust removal effect of the hydraulic support following the machine is greatly improved. Through the development and application of geomantic linkage dust removal device, the effective prevention and control of dust at the transfer point of scraper conveyor and crusher was realized. The dust escaping from the coal face can be captured effectively by using fog curtain dust collection net device in the whole section of return air roadway. Based on the research and development and application of the above-mentioned dust source-zone-classification treatment technology equipment, the dust removal rate of to-tal dust and resizable dust of 25212 working face is increased by 40%, and the working environment of the work-ing face is effectively improved, which can provide technical reference for dust control of similar working face.