The invention discloses a special fertilizer additive for rye, which is prepared from the following traditional Chinese medicine raw materials in parts by weight: 5-8 parts of licorice roots, 3-5 parts of semen cassiae torae, 1-3 parts of schisandra chinensis, 2-5 parts of cow soapwortseed, 6-9 parts of astragalus roots, 5-7 parts of safflowers, 1-4 parts of gentiana scabra bunge, 3-6 parts of rhubarb, 10-14 parts of isatis roots, 2-4 parts of radix angelicae, 3-5 parts of platycodon grandiflorus, 1-4 parts of chuanxiong rhizome, 6-8 parts of white atractylodes rhizome, 1-4 parts of red sage roots, 3-6 parts of blackberrylily rhizome, 2-8 parts of coix lacryma-jobi, 5-8 parts of bupleurum, 6-9 parts of pinellia tuber, 2-4 parts of radix pseudostellariae, 1-3 parts of coptis roots, 1-3 parts of amomum tsaoko, 5-8 parts of honeysuckles, 1-3 parts of rhizoma anemarrhenae, 5-7 parts of stigma croci, 4-6 parts of rangooncreeper fruits, 2-4 parts of acanthopanax, 5-8 parts of officinal magnolia bark and 5-7 parts of lysimachia. The special fertilizer additive has the beneficial effects that the special fertilizer additive is prepared from pure traditional Chinese medicine raw materials, so that the effects of the additive are kept, and the toxic effects of medicines are reduced; meanwhile, by virtue of the method of boiling and then decocting, the medical effects are lasting; the effects of the additive are equivalent to or even superior to the effects of the existing commercially available products; and the additive is suitable for requirements of large-scale crop planting.