The problem of on-demand air supply in working face is one of the hot topics in the construction of safe, high-yield and high-efficiency mines. As a key technology, the intelligent control technology of air volume in working face is of great significance to the intelligent ventilation of working face. This paper takes the ventilation of 5207 working face of Nanling Coal Mine in Shanxi Province as the research background, and studies the intelligent air volume control technology of working face. The results show that : 1 Due to the limitations of monitoring data, air volume control device and decision model of ventilation system in working face, the loss of air volume is as high as 46.9%. The intelligent air volume control system of the working face based on the whale algorithm can accurately solve the required air volume of the working face and realize the on-demand control of the air volume of the working face. After adopting this technology, the ventilation error of the working face is reduced to 1.3%, and the air volume is saved by about 201 m3 / min. The research can provide a useful reference for intelligent ventilation of working face under similar working conditions.