Dustproof horizontal drive mechanism of automobile electric seat

Provided is a dustproof horizontal drive mechanism of an automobile electric seat, which can reduce noise and comprises a reduction gearbox, a lead screw and a slide rail. The reduction gearbox comprises a box body, a worm supported by a bearing in the box body and a worm gear supported by a bearing in the box body. The slide rail comprises a male rail and a female rail, the lead screw is disposed on the female rail and the reduction gearbox is disposed on the male rail. The lead screw traverses two opposite side walls of the reduction gearbox body and is engaged with the female thread of the worm gear. The dustproof horizontal drive mechanism is characterized in that parts of the reduction gearbox except portions for supporting the worm gear and the worm are sealing.