Paint-bot can be used for indoor wall spraying construction in residential, apartment, office buildings, and other scenarios. They can achieve fully automatic spraying of putty, primer, and topcoat on indoor walls, upper and lower edges of bay windows and door frames, ceilings, beams, and other materials. Equipped with functions such as automatic planning of homework paths, indoor laser positioning and navigation, real-time monitoring of machine status, intelligent operation of apps, and real-time feedback of machine status and data on cloud platforms.