The invention relates to a movable chopping machine. The movable chopping machine comprises a pull-type chassis, and a driving device, a transmission system, an automatic control system, a feeding cutting device, a feeding platform which are arranged on the pull-type chassis, and also comprise a travelling mechanism, wherein the pull-type chassis is supported on the travelling mechanism, the feeding cutting device is connected with the driving device by the transmission system, the automatic control system is connected with the driving device and the feeding cutting device respectively, and the feeding platform is arranged in front of a material inlet of the feeding cutting device. The movable chopping machine adopts a trailer structure design integrally, has self-supply power and a hydraulic system, can be used for operation at different fields under the traction of a tractor, also can be used for operation at a fixed field, and can cut branches, crotches or wood straws into pieces at the lumbering site or the field edges, so that the transportation efficiency is greatly improved; the movable chopping machine adopts manual feeding or manipulator feeding modes, so that the labor intensity is alleviated.