Automatic wall painting machine head and using method thereof

The invention provides an automatic wall painting machine head and a using method thereof. The automatic wall painting machine head comprises a containing box, wherein the side portion of the containing box is of an opening structure; a painting spray head is arranged in the containing box, a painting mechanical arm is arranged below the painting spray head, a residual material recycling device is arranged below the painting mechanical arm and communicates with a residual material storage box, and a material level meter is arranged in the residual material storage box; and the painting spray head communicates with a raw material conveying device, and the raw material conveying device is used for providing raw materials for the painting spray head. According to the automatic wall painting machine head and the using method thereof, the distance between the painting spray head and the wall surface is monitored through a distance sensor, the distance between the painting spray head and the wall surface can be con