The utility model relates to a sugarcane harvesting machine technical field, especially, relate to a blade disc of sugarcane cutterbar moves balance adjustment device, it includes the cutterbar, the cutterbar includes the blade disc, the blade, arbor and sleeve, the blade sets up in the edge of blade disc, the lower extreme of arbor is connected in the center of blade disc, the outside of arbor islocated to the cover barrel casing, it still includes adjusting device, adjusting device includes an adjusting device, the 2nd adjusting device and laser displacement sensor, an adjusting device andthe 2nd adjusting device all are connected with the laser displacement sensor electricity, the cutterbar includes still that the spiral promotes conveying mechanism, and the spiral promotes conveyingmechanism's one end to be connected in the sleeve, and the spiral promotes conveying mechanism's the other end to be connected in the blade disc, and an adjusting device sets up in spiral promotion conveying mechanism, and the 2nd adjusting device sets up in the blade disc. The utility model discloses have fine vibration isolation effect and damping effect, has greatly improved the cutting qualityof cutterbar to the sugarcane, greatly reduced the sugarcane by the broken first rate of the perennial root after cutting.