The present invention discloses a method for manufacturing a flooring, in particular, to a method for manufacturing a multicolor antique wood flooring having an antique look and an embossed effect. It comprises the following steps: processing the raw material of the wood flooring to form an unvarnished flooring having the natural colors of lumber, and then performing water-based coloring with a dark color to the unvarnished flooring; drying; polishing; performing water-based coloring with a light color to the polished flooring; drying; applying a primer; drying; polishing; applying a top coat; and drying. Since coloring is performed for times in sequence in the manufacturing process, and the shades of the colors differ, and polishing are also performed for times, the places having different hardness in the wood grain present unevenness, and thus the wood flooring manufactured in this method has the advantages of having an embossed effect, many colors, different shades, irregular variations, and a strong sense of layers, as well as a prominent antique look and etc. and meanwhile, the level of the flooring is improved, which can cover the defects of low-quality flooring, and it is simple in processing, because the process of soaking coloring to the lumber in the manufacturing of conventional flooring is omitted.