People who need to be screened for tuberculosis are: 1. For individuals who have suspicious symptoms of tuberculosis, especially those who cough or cough up sputum for more than 2 weeks or have blood in their sputum, they should be highly suspicious of the possibility of tuberculosis and should go to a designated tuberculosis hospital for examination in a timely manner; 2. For people who are prone to tuberculosis, they should go to the hospital for regular examination, also called screening of high-risk groups, which include people with TB patients have close contact with the population, the elderly population, diabetic patients, pneumoconiosis patients, patients with renal insufficiency and immune system diseases, long-term use of hormones or immune preparations, people infected with AIDS or patients, etc.; 3, for people who are prone to TB transmission in a specific environment, they need to go to the designated TB hospital for regular screening, which is usually called the key populations TB screening. Specifically, including those engaged in TB prevention and treatment, medical and health personnel, food, drug and cosmetic workers, employees in public places, staff and students enrolled in schools and childcare institutions at all levels and new students, those exposed to dust or harmful gases, employees in the dairy cattle breeding industry, etc.