A processing method for square woodwork with coating as well as processing equipment thereof and a product belong to the technical field of woodwork processing methods, equipment and products. The coating processing procedure comprises the followings: cleaning the surface of a coated piece, heating the surface, gluing, covering an upper surface and a left surface with paper, cutting paper for the first time, covering the right surface and the lower surface with paper, and cutting paper for the second time; and in the steps of cutting paper for the first time and cutting paper for the second time, a square woodwork covering machine is adopted. The square woodwork covering machine comprises a frame, a transmission device, 20 or more than 20 driving rollers, as well as a cleaning device, a control panel, an infrared heating lamp, a coating paper rolling system, a paper guiding roller and two coating paper cutting device which are sequentially arranged on a coated piece transportation station. A square woodwork product with a coated layer is characterized in that a butted state is shown at the connector of the coated layer. The square woodwork product has the advantages that the paper connector of the product is enabled to be under a butted state, the coated products are enabled to be less susceptible to upturn, stripping, breakage failure and flaking off, and to be scouring resisting and wet resisting, and the product quality is improved.