The utility model belongs to the technical field of coal mine tunnel dust removal by ventilation. A self -adaptation collection dirt device that induced drafts that directional dust collecting deviceof headwork face concurrent flow air curtain, by installing in entry driving machine one side and a right angle column structure that is in the concurrent flow air curtain generator that the entry driving machine opposite side installed on the tunnel and forms, self -adaptation collection dirt induced draft the device be one inside cavity both ends open structure, concurrent flow air curtain generator is a hollow the past of inside to the after -contraction. The beneficial effects of the utility model are that: under the circumstances of having guaranteed ventilation safety, improved accuse dirt efficiency, guaranteed the stability of accuse dirt effect.