Abstract: Appling a set of KHCG500 shearer dust-tracking and spraying dust suppression system in the 16122-1 fully mechanized coal face, the system is able to locate the shearer running position in the face. According to shearer position, it determines spraying support position and realizes automatically the function of dust suppression by spraying.The actual application shows that the system can implement multi-channel and high-efficiency dedusting for a large range and high-concentration dust produced in coal mining.