Traditional Chinese medicine composition for preventing and treating infectious bronchitis as well as preparation method and application of traditional Chinese medicine composition

The invention belongs to the field of veterinary drugs, and particularly discloses a traditional Chinese medicine composition for preventing and treating infectious bronchitis of chicken as well as a preparation method and application thereof, the traditional Chinese medicine composition is prepared from the following raw materials in parts by weight: 12 parts of ephedra, 12 parts of almond, 9 parts of liquorice, 30 parts of coix seed, 12 parts of fructus forsythiae, 20 parts of honeysuckle stem, 12 parts of cynanchum atratum, 20 parts of rhizoma smilacis glabrae and 6 parts of herba violae. By preventing and treating the chicken artificially infected with IBV, the survival rate of the chicken can be remarkably increased, the weight gain reduction caused by IBV is relieved, the clinical symptoms are relieved, the viral load of trachea and kidney tissues is reduced, the pathological injury of organs is relieved, and the body recovery is promoted. The traditional Chinese medicine composition for preventing and