Tuberculosis (TB) is a chronic infectious disease. It is mainly transmitted to healthy people through airborne droplets from coughing, sneezing, or talking loudly in patients with bacillary TB, resulting in the latter being infected with TB bacteria in their bodies. Only a small percentage of infected people (less than 5%) develop TB at that time, called primary TB, mostly in children. In most infected people, the TB bacillus remains latent in the body for decades, and when the body’s immunity is low, the bacillus becomes active again and develops, which is called secondary TB disease, mostly in adults. Avoiding infection of the body with TB bacteria is the primary factor in avoiding the development of TB disease. Patients with bacillary TB should be actively treated and properly isolated to eliminate and control the source of infection. Usually, you should maintain a civilized way of interaction, cough and sneeze to cover your mouth with a handkerchief or tissue to prevent droplets from splashing, and do not face people. Spit in the hand towel, do not spit anywhere. Ventilate your room frequently to reduce the spread of tuberculosis bacteria. Wear a mask when entering public places, especially for TB patients, to prevent infecting others. Babies should be vaccinated with BCG in time after birth to prevent the occurrence of severe childhood TB. Improve the immune function of the body. It is important to strengthen protein dietary intake, eat a reasonable and balanced diet; participate in physical exercise appropriately and avoid overexertion; especially ensure sufficient sleep, maintain a good mood and avoid stress and anxiety. In this way, even if you are infected with TB bacteria, you will rarely develop the disease. If you have diabetes, asthma, kidney disease, blood disease, rheumatic disease, etc., you must actively control them and raise awareness of TB screening, because these people are more likely to develop TB. Finally, we remind you that even if you have TB, most of them will be completely cured if detected early and treated early.