The invention provides a method for forming a multi-color plating layer. The method introduces an intermediate plating layer between various plating layers forming the multi-color layer; the intermediate plating layer can make a stripping solution not influence the plating layers under the intermediate plating layer when the plating layers above the intermediate plating layer are deplated, so that the method does not need to strictly control deplating conditions, such as deplating time and concentration of the stripping solution, simplifies deplating process, stabilizes the deplating degree, and makes the obtained multi-color plating layer have smooth surface and good beautifulness. The method greatly improves the operability for preparing the multi-color plating layer, and can stably obtain the multi-color plating layer of which the various plating layers are same in thickness and appearance.