Grass trimmer with adjustable grass trimming height

The utility model relates to grass trimmer equipment, and discloses a grass trimmer with adjustable grass trimming height, which comprises a grass trimmer body, a transmission shaft arranged at the end part of the grass trimmer body, a grass trimming head component arranged on the transmission shaft and synchronously rotating with the transmission shaft, and a grass trimming head component comprising a rotating disc and a shaft sleeve fixed on the rotating disc, a longitudinal adjusting hole and a plurality of transverse limiting holes are formed in the shaft sleeve, all the transverse limiting holes are communicated with the longitudinal adjusting hole, positioning holes are formed in the circumferential side wall of the transmission shaft, the shaft sleeve is connected with the transmission shaft through fasteners, one ends of the fasteners are installed on the positioning holes, and the other ends of the fasteners are installed on the transmission shaft. And the other end of the longitudinal adjusting rod