The invention, which belongs to the button field, especially relates to a urea-resin button and a preparation method thereof. The urea-resin button comprises 36-45wt% of urea resin, 50-64wt% of a resin adhesive, 0.1 to 1wt% of a pigment solution, and 1-3wt% of mica powder. The button and the preparation method have the following beneficial effects: the process is simple; the operability is high; the labor cost is low; no crack, notch, uneven part or obvious scratch is formed on the surface of the prepared button; the pattern is free from obvious deformation, a white hole or white ring; the button hole is bright, clean, and smooth; the cavity is even and smooth; the friction-resistant performance is good; colour fastness is high; and the shape of the button is uniform. Moreover, the button provided by the invention has high appearance color permanency, high controllability on lustrousness and button pattern, and good smooth texture and is suitable for high-grade clothes.