Ground brush for dust collector

The invention relates to a ground brush for a dust collector, which comprises an upper cover, an air inlet passage, a baseplate arranged at the lower part of the upper cover and fixedly connected with the upper cover, wherein a dust suction inlet is formed in the baseplate; the dust suction inlet and the air inlet passage are communicated; an upward concave groove is formed in a part on the bottom end surface of the baseplate in the length direction; the dust suction inlet is the notch of the groove; a through hole used for communicating the dust suction inlet with the air inlet passage is formed in the groove bottom surface, corresponding to the air inlet passage, of the groove; block pieces are arranged on two sides of the through hole in the groove; the upper end parts of the block pieces are connected with the groove; the lower end parts of the block pieces extend out the groove; the lower end parts of the block pieces are higher than groove side walls of the groove. According to the ground brush for the