Patients with tuberculosis generally do not require isolation or separate isolation. Tuberculosis is a respiratory infectious disease caused by Mycobacterium tuberculosis infection of the lungs, and is a legal category B infectious disease, i.e., a strictly managed infectious disease. It is highly contagious and spreads mainly by droplet transmission through the respiratory tract. Children, the elderly and infirm, and the immunocompromised are common susceptible groups. However, the majority of TB patients do not require isolation, but rather certain protective measures. Patients with non-bacterial sputum, i.e., sputum smear negative, are less contagious and do not require special protective measures, but only need to protect the susceptible population, i.e., avoid close contact. Patients with positive sputum smear, the source of TB infection, need to take relative isolation measures, avoid going to places where people gather and avoid close contact with others, and wear a good mask for protection, so that the home is always ventilated and not easily infected.