The invention discloses an anti-mite finishing method for silk fabrics. The anti-mite finishing method includes steps of adding finishing agents into water to prepare aqueous solution; spraying the aqueous solution on the surfaces of the fabrics by the aid of high-pressure spraying processes; drying the fabrics. The finishing agents comprise, by weight, 5-6 parts of sodium alginate, 4-8 parts of trimethoxysilyl propyl methacrylate, 5-10 parts of vinyl versatate, 3-6 parts of silicon dioxide, 2-4 parts of benzyltrimethylammonium chloride, 4-8 parts of sodium citrate, 2-6 parts of potassium oxalate, 3-7 parts of didecyl dimethyl ammonium chloride, 2-6 parts of sodium xylene sulfonate, 7-11 parts of vinyl trimethoxy silane, 10-12 parts of talc powder and 15-20 parts of 2-methyl-4-isothiazolines biocide-3-ketone. The anti-mite finishing method has the advantages that the silk fabrics finished by the aid of the anti-mite finishing method are excellent in avoidance performance for dust mites, gamasid mites and chigger mites; the fabrics are safe and are free of allergy even if the fabrics are in contact with the skin surfaces of users for a long time, and accordingly comfortable family life environments can be created for people.