With the increasing number of ruminant animals, the diseases related to them are increasingly affecting the farm health. Therefore, accurate diagnosis and prevention & control are essential for the early warning of infection, symptomatic treatment, immune prevention, and elimination and eradication of the epidemic. For this reason, we have developed a series of products. Among them, Mycobacterium bovis Gamma Interferon ELISA Test Kit for Cattle and BRU cELISA antibody test kit have obtained the new veterinary drug registration certificate. Brucella AGID can distinguish between immune infection and naturally infection.