Prevention of tuberculosis mainly from three aspects to take measures: First, control the infectious agent, tuberculosis infectious source is mainly sputum tuberculosis bacilli positive tuberculosis patients, so these patients should be treated in a timely manner; Second, improve the ability to resist infection and self-protection, develop good hygiene habits, do not smoke, do not drink, ensure sufficient sleep, balanced diet, reasonable nutrition, strengthen exercise, reduce and tuberculosis patients The body will produce specific anti-tuberculosis bacilli through BCG vaccination, and the body will produce specific anti-tuberculosis bacilli antibodies and form cellular immunity after BCG vaccination, and the protection rate can reach more than 80%.