The invention discloses a method for archaizing and aging wood for buildings, relates to the technical field of wood processing technology for the buildings, and aims to solve the problems that the whole wood aging process is uncontrollable, aging treatment is carried out on specific parts with difficulty, and the aging degree is difficult to control meanwhile. The method for archaizing and agingwood for the buildings comprises the technical points that S1, base material treatment is carried out; S2, dipping liquid preparation is carried out; S3, the old part of the wood which needs to be aged is waxed, and the wood stands at normal temperature until the wax is solidified and formed; S4, the remaining part of the wood in the step S3 is coated with preservative, and the aged part of the wood in the step S3 is dewaxed; S5, the whole wood is immersed in the dipping liquid for soaking treatment for 1-2 hours by adopting a vacuum pressure-increasing dipping method; S6, cleaning is carriedout; S7, plasma treatment is carried out; S8, secondary grinding is carried out; and S9, the wood is soaked in an urea aqueous solution and the wood is allowed to dry naturally until the water contentis below 15%. According to the method for archaizing and aging wood for the buildings, the aging effect is uniform and natural, the treatment is deeper and more thorough, and the aging treatment timecan be greatly shortened.