The invention discloses a forage bundling machine, and belongs to the technical field of forage treatment, the forage bundling machine comprises a treatment box, the inner wall of the treatment box is fixedly connected with a partition plate and a discharging guide plate, the middle of the partition plate is hinged with an opening and closing plate, the upper end of the partition plate is fixedly connected with a baffle, and the upper wall and the right wall of the treatment box are movably connected with a first moving rod and a second moving rod in a penetrating manner; and the ends, located in the treatment box, of the first moving rod and the second moving rod are fixedly connected with a first extruding plate and a second extruding plate correspondingly. According to the scheme, forage is vertically and transversely extruded through the first extruding plate and the second extruding plate, so that the forage is more compact, the occupied area is smaller, the utilization rate of subsequent space is greatly increased, the two ends of a forage ball can be bundled and wound through the winding mechanism, the situation that the forage ball is scattered in the transportation and use process is prevented, and meanwhile, the forage balls can be conveniently moved and stored, the manual labor intensity is low, and the forage bundling efficiency is high.