The invention discloses an automatic rotation spraying mechanism and a spraying method. The mechanism comprises a main frame; the main frame is connected with a working platform; a rotating shaft is arranged on the working platform, and is provided with a rotating disc; a rotary driving mechanism is arranged below the rotating disc; the rotating disc is provided with a bearing mechanism for placing products; a rotation driving mechanism is arranged in a spraying station; the bearing mechanism and the rotation driving mechanism are in transmission connection; the rotation driving mechanism drives the bearing mechanism to rotate; and a spraying gun mechanism is arranged on the working platform. The mechanism can solve the following technical problems: cured products are bonded with hangers to cause difficult product taking; more powder is accumulated on the hangers to cause wastes; the products are protected by large-batch shielding of the hangers, and meanwhile, the bad powder wastes are caused; and the quality of manually sprayed products cannot be accurately mastered, so that the product quality problems are liable to generate to cause rework.