Compact processing and gradient dyeing method for workpiece surface capable of forming a gradient color on the surface of a workpiece according to the pore distribution relationship of a porous structure

The present invention aims to disclose a compact processing and gradient dyeing method for a workpiece surface, which uses an anode carrier to carry a workpiece, so that the workpiece is tilted with respect to a cathode rod for performing an anodizing process. In the anodizing process, the inclination angle relationship between the workpiece and the cathode rod causes the difference between various parts of the workpiece and the cathode rod so as to produce different electrical conductivities, thereby forming an oxide layer on the surface of the workpiece, and further converting the oxide layer into a porous structure composed of a plurality of pores having different pore diameters and different depths. Then, the workpiece is performed with a dyeing process to attach at least one dye to the porous structure, and form a gradient color on the surface of the workpiece according to the pore distribution relationship of the porous structure.