Waste cigarette checking and recycling system

The invention relates to a waste cigarette checking and recycling system, which comprises a butt joint receiving device, a cigarette feeding device, a conveyor, a plate drawing device and a cigarette packing disk, wherein the cigarette feeding device comprises a buffer mechanism for adjusting the height of a material level of cigarettes in a cigarette inlet channel; and a plurality of detection heads for detecting the length of the cigarettes are arranged in a cigarette feeding channel along the width direction of a box. The waste cigarette checking and recycling system reliably detects and removes broken cigarettes and hollow cigarettes, improves on-line yield, and has high receiving speed, high storage capacity and high control accuracy.