Bovine tuberculosis is a chronic bacterial disease of cattle that occasionally affects other species of mammals. This disease is a significant zoonosis that can spread to humans, typically by the inhalation of aerosols or the ingestion of unpasteurized milk. The aim of this study was to bacteriological survey of tuberculosis in Tabriz and suburbs farms. For this mean, 23142 cows were examined by tuberculin test and of positives animals, samples from lymph nodes were achieved for bacteriologic and pathological studies. In this study revealed that of 23142 cases 919 were positive and 89 were suspicious. In this study revealed that Gogan town in east Azerbaijan province is focus of tuberculosis and must be take measures in this town to eradication of tuberculosis.