The utility model provides a tree barrier cleaning device. The device comprises a climbing device and a cleaning device, the climbing device comprises a telescopic rod, a first base and a second base,the first base and the second base are arranged at the two ends of the telescopic rod, an upper mechanical arm is arranged on the side face of the first base, and a lower mechanical arm is arranged on the side face of the second base. The cleaning device comprises a third base and an electric wire saw arranged on the side face of the third base. According to the device provided by the utility model, the upper manipulator and the lower manipulator are used for climbing on a trunk, and after the device climbs upwards to a preset position, the reciprocating cam is started, so that the steel wiresaw is controlled to do reciprocating motion in the horizontal direction; and meanwhile, the screw rod is started, and the first side arm and the second side arm are controlled to move towards the position close to the tree barrier, that is, the steel wire saw continuously moves towards the tree barrier in the process of cutting the tree barrier, so that the tree barrier is separated from the trunk, and cutting of the tree barrier is realized.