The utility model discloses an underground concentrator, underground concentrator form underground and including circle pillar cavity portion and with the circular cone chamber portion that the lower extreme of circle pillar cavity portion meets, the lower extreme of circular cone chamber portion is equipped with puts the sand mouth, the lower extreme of circular cone chamber portion be equipped with with put the passageway of sand mouth intercommunication, be equipped with the harrow frame that is used for the stirring article material in the portion of circular cone chamber. According to the utility model discloses underground concentrator, through setting up underground, therefore the manufacturing of concentrator does not receive the restriction of space and topography to it can increase, with low costs and be difficult for receiving the advantage of the influence of topography to have manufacturing and simple to operate, capacity.