Unmanned mowing boat is an intelligent maintenance robot for ecological waters. It is designed for large and medium-sized ecological waters. It has functions such as water grass harvesting, water surface cleaning, water quality monitoring, and autonomous return charging. It is suitable for ecological water systems with submerged plants,including natural lakes, urban parks, urban rivers and tourist attractions. As well as high-end residential waters, science and technolo-gy parks, golf courses and other commercial waters. It can achieve 24-hour standby, all-weather management and control, and promote intelligent maintenance of water ecology.