The ground mortar cleaning robot is a device used to automatically clean fallen mortar on the ground of buildings. It has functions such as mortar floating slurry cleaning, automatic positioning and navigation, self-built map, path planning, automatic obstacle stopping and collision avoidance. It can perform fully automatic cleaning operations through data collection and path planning, and provide good ground cleanliness prerequisites for floor tile paving construction technology. It is mainly used on the ground after wall plastering.