The invention discloses a lifting device for maintenance of lawn mowers used in courts, which comprises a universal wheel with brake pads, a wheel seat, a support seat, a moving seat, a fixed sleeve, a fixed rod, a fastening bolt, a fixed lining seat, and a push-pull rod , push handle, anti-skid pad, lifting table body, lockable lifting adjustment rod structure, court surface cleanable auxiliary spray nozzle structure and lifting table surface impurity dust cleaning brush structure, the universal wheel with brake pads is connected by bolts In the middle of the lower part of the wheel seat. The present invention installs the lining seat, the mounting seat, the adjusting screw rod, the lifting handle, the fixing nut and the locking nut, which is beneficial to the height adjustment when the lawn mower is being maintained, so as to facilitate maintenance, facilitate operation, and improve the height of the mower. Stabilization effect ensures maintenance safety; water injection cover, water storage tank, water suction pump, drainage pipe, water spray row and sprinkler nozzle are set up, which is beneficial to increase the cleaning and suction function of the court surface, and is convenient for cleaning.