The invention discloses special bronze red ink powder for official document printing and a preparation method thereof. The special bronze red ink powder is composed of the following components in masspercentage content: 62-85% of polyester resin, 3.5-10% of a bronze red pigment, 0.5-3% of a dispersant, 1-8% of a curing agent, 3-10% of wax, 0.5-5% of a charge control agent, 0.5-3% of a light stabilizing agent and 1-4 parts of an external additive. The bronze red ink powder disclosed by the invention can realize the printing of official documents on a red-black double-color printer, red characters and stamps of the printed products has a bright and brilliant bronze red hue. The bronze red ink powder prepared by adopting the physical method is mature in production process, safe and environment-friendly in production process and suitable for industrial production.