Laser fume extraction system consist of a mainframe、a hose and a cowl which can achieve the function of absorption、delivery and purification. This system is special designed to purify hazardous fume and dust which is generated in the process of laser machining(laser marking、laser cutting、laser welding、laser carving etc), it not only can be able to reduce pollution to environment and laser equipment itself、eliminate harm to health, but also to improve product machining quality.