The invention relates to a feed additive, and especially relates to a rabbit feed additive. The rabbit feed additive is composed of medicated leaven, Radish Seed, dried orange peel, Weeping Forsythia, Fructus Aurantii, Radix Codonopsis, Poria cocos, white hyacinth bean, lotus seed, coix seed, Fructus Amomi, Radix Platycodonis, Rhizoma Cimicifugae, Combined Spicebush Root, Radix Scutellariae, Cyrtomium fortunei, Amur Corktree Bark and Semen Plantaginis, wherein the medicated leaven, the Radish Seed, the dried orange peel, the Fructus Aurantii, the white hyacinth bean, the Fructus Amomi and the Combined Spicebush Root are simultaneously used for digestion helping and accumulation removing; the dried orange peel, the Weeping Forsythia, the Poria cocos, the white hyacinth bean, the coix seed, the Fructus Amomi, the Rhizoma Cimicifugae, the Radix Scutellariae, the Cyrtomium fortunei, the Amur Corktree Bark and the Semen Plantaginis are simultaneously used for dampness and heat eliminating; the medicated leaven, the dried orange peel, the Radix Codonopsis, the Poria cocos, the white hyacinth bean, the lotus seed, the coix seed, the Fructus Amomi and the Radix Platycodonis are simultaneously used for spleen invigorating and stomach nourishing; and the Combined Spicebush Root, the Cyrtomium fortunei and the Amur Corktree Bark are simultaneously used for parasite expelling, sterilizing and digestive juice secretion increasing. The interaction of the above eighteen medicines can realize digestion helping, accumulation removing and dampness and heat eliminating to prevent diarrhea, and can also realize spleen invigorating, stomach nourishing and spleen and stomach harmonizing to enhance the gastrointestinal function and improve the human immunity.