The invention discloses a special spraying gun for fine arts and a using method. The spraying gun comprises a spraying gun body, a circular disc, anti-skid threads, a base and an injection pipe, wherein a feeding port is fixedly formed in the upper part of the spraying gun body; a spraying gun fixed base is fixedly mounted on the right side of the spraying gun body and is also fixedly mounted at the periphery of the circular disc; a handhold part is mounted at the periphery of the lower part of the circular disc; a switch is fixedly arranged under the anti-skid threads; a support post is fixedly mounted above the base; a rotating shaft is mounted above the support post and is connected with the circular disc; a tool groove is mounted at the periphery of the upper surface of the circular disc; the feeding port is formed in the upper part of the ejection pipe; a spray head is fixedly arranged on the left side of the ejection pipe; a press plate is mounted on the right side of the ejection pipe; the ejection pipe and the press plate are fixed inside the spraying gun body; and the feeding port is communicated with the spray head by the ejection pipe. The special spraying gun for fine arts has a special structure and is convenient to use; moreover, multiple processing coating can be sprayed out, and the using requirement is met.