The invention discloses a wood antique finish technology for a historic building. According to the technical scheme, the wood antique finish technology for the historic building comprises following steps: S1, the wood surface is cleaned and aired; S2, the portion, required to be subject to antique finish, of the wood is subject to waxing treatment, standing is carried out, and wax is solidified and molded; S3, the remaining portion, except for the antique finish portion, on the wood is coated with an anti-corrosion agent; S4, the antique finish portion in the S3 of the wood is subject to wax removal treatment until the antique finish portion of the wood is exposed in the air; S5, the wood in the S4 is immersed in a pit mud solution to be soaked for 20 min and then is taken out, a sodium bicarbonate solution is used for cleaning the pit mud solution on the surface of the wood, and clean water is used for cleaning the wood surface; S6, the wood in the S5 is treated for 2 h to 3 h at the high temperature, rapid cooling and standing are carried out, and a product is obtained; the technology has the following beneficial effects that the portion, required to be subject to antique finish, of the wood is subject to antique finish, the antique finish technology has the higher flexibility, and meanwhile the treated wood is good in moth prevention performance.