Tuberculosis is a chronic disease caused by Mycobacterium tuberculosis, and pulmonary tuberculosis is the most common type of tuberculosis, which is a respiratory tract infection and is highly contagious, but the occurrence of tuberculosis can be reduced through effective prevention. Tuberculosis can invade various organs of the human body, but the lungs are the main focus, called tuberculosis, tuberculosis is mainly transmitted through the respiratory route, the main prevention of tuberculosis is to develop a good routine, do not spit, when in contact with patients with tuberculosis, wear a medical mask, regularly open the windows to ventilate the room, so that daylight can effectively reduce the number of mycobacterium tuberculosis in the house, reducing the chances of airborne mycobacterium tuberculosis The number of tuberculosis bacilli in the house can be effectively reduced and the chance of airborne transmission of tuberculosis bacilli can be reduced. Develop customary personal hygiene habits, cover your mouth with a handkerchief or wear a mask when coughing or sneezing, and do not speak loudly in close proximity to others. Items used by patients should be disinfected and cleaned frequently. Patients with open tuberculosis need to be isolated and treated, and it is best for patients to live in a separate room or sleep in separate beds to reduce the risk of transmission. Prevention of tuberculosis also requires proper exercise to strengthen one’s resistance and improve immunity, attention to avoid mental stress and overexertion, and a balanced diet to reduce the incidence of tuberculosis by avoiding spicy and stimulating foods. In addition, many diseases can increase the incidence of TB, such as diabetes, AIDS, silicosis, gastrointestinal diseases, tumors, organ transplants, etc. Treatment of diseases related to TB is very important to prevent TB. In conclusion, tuberculosis is a chronic disease caused by Mycobacterium tuberculosis, of which tuberculosis is highly contagious, but it can be effectively prevented by taking respiratory isolation measures, paying attention to nutrition and exercise, and improving one’s resistance.