Abstract: In order to improve the normal transportation efficiency of the mineral aggregate，aiming at the problem that the belt wears fast and tears due to the uneven running deviation of the belt due to the uneven feeding of conveyors in limited space conditions，an auxiliary device that can offset the uneven feed⁃ ing of the unilateral side is designed，and the auxiliary device is theoretically analyzed，the effect before and after application is compared.The comparison results show that the anti-deviation automatic deviation correction auxiliary device can offset the defect of uneven stress of the belt，ensure that the belt does not de⁃ viate，and can be applied to the belt conveyor with bad working conditions to ensure stable and smooth pro⁃ duction.

Key words: conveyor, belt, uneven deviation, offset, auxiliary device