Automatic spraying system and method for outer wall of high-rise building

The invention discloses an automatic spraying system and method for an outer wall of a high-rise building. According to the automatic spraying system and method, an automatic material spraying instruction and the spraying thickness type of a current spraying module are obtained through a material matching module, and the material matching module controls a corresponding spraying thickness adjusting unit according to the spraying thickness type of the current spraying module; and the high-rise building outer wall monitoring module is used for monitoring the spraying thickness and detecting current spraying thickness and color brightness information, when the current spraying thickness and color brightness information shows that the proportion is correct, the high-rise building outer wall monitoring module obtains to-be-automatically-sprayed material information sent by the material matching module and sends the to-be-automatically-sprayed material information to a paint filling groove for filling, and the high