Color fastness improving method for decorative base paper

The invention discloses a color fastness improving method for decorative base paper, and relates to the field of paper making. The decorative base paper comprises a front half portion and a rear half portion. The front half portion is produced after mixing of at least wood pulp, cotton pulp, titanium dioxide, kaolin, wet-strength resin, microcrystalline cellulose and cationic starch. The rear half portion is produced after mixing of at least wood pulp, cotton pulp, titanium dioxide, kaolin and wet-strength resin. The decorative base paper is obtained after the steps of feeding, pulping, deslagging, sizing, papermaking, pressing, drying, calendering and the like of the front half portion and the rear half portion. Compared with the prior art, the color fastness improving method has the advantages that the microcrystalline cellulose and the cationic starch are added into the pulp to improve the effect of transferring and copying in the later period, and accordingly, the problem of poor printing effect during tr