Sugarcane harvesting method and system

The invention discloses a sugarcane harvesting method which comprises the following steps: controlling a sugarcane harvester to walk, and monitoring whether sugarcane exists or not; when the sugarcane is monitored, sugarcane state information is obtained, and whether the sugarcane falls down or not is judged according to the sugarcane state information; when it is judged that the sugarcane falls, a falling structure of the sugarcane harvester is started, the falling structure lifts the falling sugarcane, and the actual average height of the ends of the sugarcane in the preset area is obtained; adjusting the height of a tip cutting structure of the sugarcane harvester according to the actual average height of the tips; the tip cutting structure and the cutting structure are started, the tip cutting structure is used for cutting the tips of the sugarcane, and the cutting structure is used for cutting the sugarcane which is cut later. The invention further provides a sugarcane harvesting system, and the situatio