The invention relates to a traditional Chinese medicine feed additive for preventing and treating the infectious bronchitis and the anemopyretic cold of poultries, which is prepared from the followingselected raw medicinal materials by weight portion: 7 portions of ephedra herb, 6 portions of platycodon grandiflorum, 5 portions of subprostrate sophora, 6 portions of rabdosia rubescens, 4 portionsof scutellaria baicalensis, 8 portions of isatis roots, 5 portions of liquorice, 6 portions of fructus forsythiae, 6 portions of cordate houttuynia and 5 portions of radix Peucedani. A preparation method of the traditional Chinese medicine feed additive is realized as follows: the raw medicinal materials are mixed and then pulverized or respectively pulverized and then mixed. The selected raw medicinal materials have functions of clearing away heat and toxic material, dispelling wind and heat, reducing swelling and removing carbuncle and have good preventing and treating effect aiming at symptoms, such as snore, head swing, cough, snivel, strange squall, dyspnoea, depressed spirit, ingestion reduction, yellow and green excrement, and the like caused by the infectious bronchitis, the infectious laryngotracheitis, the anemopyretic cold, the rhinitis, the slow breathe, and the like of the poultries.