Mechanical pipe cleaner and pipe cleaning method of mechanical pipe cleaner

The invention discloses a mechanical pipe cleaner. The mechanical pipe cleaner comprises a rotary cleaning part, a worm and worm gear transmission part, a sundry clearing and transporting part, a dragging part and an advancing part, wherein, the rotary cleaning part comprises a rotating shaft and a cleaning part, and the end parts of the rotating shaft and the cleaning part are connected; the worm and worm gear transmission part comprises a worm, a worm gear and an outer shell, and the advancing part is installed at the end of a worm gear rotating shaft; the sundry cleaning and transporting part comprises a front-end cleaning part, a rear-end cleaning part and a connecting support, the rear part of the front-end cleaning part is connected to the outer wall of the outer shell through the connecting support, and the front end of the rear-end cleaning part is connected to the end part of the rotating shaft through the connecting support; and one end of the dragging part penetrates through the front-end cleaning