The invention discloses a novel plant active feed additive. The novel plant active feed additive is prepared from composite extract of triticale extract, dandelion, clinoptilolite, a modified microcrystalline silicate, plumepoppy, kelp, rosemary, clove, wolfberry, fructus psoraleae and garlicin according to a scientific ratio. The novel plant active feed additive has activation, adjustment and quick-acting functions, is rich in eighteen amino acids and a plurality of minerals, vitamins, flavonoids and saponins, fully avoids antibiotic drugs in breeding, eliminates heavy metal and drug residues, reduces a concentration of ammonia in an animal house, improves a culture environment and animal immunity, maintains the balance of florae in a livestock intestinal tract, improves muscle quality, prevents enterorrhea and diarrhea and improves a feed conversion ratio and an egg yield.