This automatic wall-spraying robot is specially designed for use in underground garages. Its housing protectively accommodates the electrical control and spraying system while, at the same, time providing a sense of robustness. The robot is equipped with detachable dual nozzles. The flexible joints of the robotic arm facilitate the automatic und efficient spraying of columns, walls and entire ceilings. Based on the built-in system, the robot is able to position itself, avoid obstacles and operate autonomously. IP67-level protection ensures the accurate and safe operation of the robot in harsh work environments.