Scientific prevention of tuberculosis should firstly be inoculated with BCG vaccine, and secondly, hygiene should be strengthened, diet should be strengthened, and close contact with tuberculosis patients should be avoided. 1. BCG vaccination: BCG is a less virulent Mycobacterium bovis, and the immunity produced by BCG vaccination can achieve the purpose of preventing tuberculosis. 2. Enhance hygiene: Tuberculosis is a respiratory infectious disease, which can be transmitted through droplets, so it is necessary to strengthen hand hygiene, and cover the mouth and nose with a handkerchief when coughing and sneezing. When you go to public places, you can wear medical surgical masks, which can block viruses, bacteria, etc., so as to achieve the purpose of preventing tuberculosis. 3. Enhance diet: maintain a balanced nutritional intake of foods rich in vitamins and proteins, which can strengthen the body’s resistance. 4. Avoid close contact with patients: healthy people may cause tuberculosis after inhaling droplets with Mycobacterium tuberculosis, and should avoid close contact with patients with tuberculosis in order to reduce the chance of being infected. At the same time, it is important to note that once symptoms similar to tuberculosis appear, including low-grade fever, cough, etc., you should consult a doctor in time.