The invention relates to a medicine for preventing and treating bovine influenza. The medicine is composed of cassia twig, commeline communis, cyrtomium rhizome, radix bupleuri, licorice, coptis, fructus forsythiae, anemarrhena, scabrous elephantfoot herb, notopterygium root, arctium fruit, perilla leaf, dark plum, and kudzu vine root. The medicine is prepared by the following steps: weighing the components mentioned above, decocting, extracting the effective components, then adding fine powder, which is prepared by grinding malt, haw, dried orange peel, rhizoma atractylodis, radix codonopsis, pokeberry root, Chinese angelica, and herba andrographitis, and evenly mixing the effective components and the fine powder so as to obtain the medicine. The symptoms such as fever, and the like of cattle can be effectively released after the application of the medicine, and the final cure rate can reach 100%. Furthermore, the medicine contains an appetite promoter, which can increase the food intake of cattle, and an immunity agent, which can increase the immunity of cattle. The components cooperate with each other to generate a synergetic effect, and the cattle can be quickly cured by the medicine.