The invention discloses an intelligent purification system for air entering a coal mine. The intelligent purification system comprises an air sensor, a background processor, a dust collecting device and a ventilation device, wherein the air sensor is used for sensing air conditions and generating air condition information; the background processor is electrically connected to the air sensor so asto receive the air condition information and control the dust collecting device and the ventilation device to work according to the air condition information; the dust collecting device is electrically connected to the background processor and is controlled by the background processor for dust collection; and the ventilation device is electrically connected to the background processor and is controlled by the background processor for ventilation. According to the intelligent purification system for the air entering the coal mine, resource waste can be avoided, the secondary pollution is eliminated and the underground transportation safety is guaranteed.