Patients with tuberculosis can kiss if their condition is well controlled and not contagious. When sputum smear positive, patients with active tuberculosis should not kiss normal people to prevent the transmission of tuberculosis. Tuberculosis is an infectious disease of the respiratory system caused by Mycobacterium tuberculosis infection, which can lead to symptoms such as low-grade fever, night sweats (sweating abnormally after falling asleep and stopping after waking up), and chest pain, or no symptoms at all. TB is mainly spread by droplets, so active TB patients and sputum-positive patients should not kiss normal people. Tuberculosis can be controlled after two months of treatment, and kissing is allowed after the sputum test is negative. Tuberculosis patients should pay attention to supplement some calcium and iron, eat less greasy food, pay attention to rest and avoid exertion. Follow the doctor’s instructions to actively use drugs, pay attention to wear a good mask during the active period of the disease, avoid close contact with others.