It is usually not recommended for people with tuberculosis to kiss their girlfriends. Tuberculosis refers to the respiratory infectious disease that occurs in the trachea, bronchus, lung tissues, pleura, etc. due to infection by Mycobacterium tuberculosis. Tuberculosis is contagious, the most important way of transmission is the transmission of the respiratory tract, such as tuberculosis patients in sneezing, coughing, laughing can be discharged tuberculosis bacilli and suspended in the air, if the healthy person contact inhalation can lead to infection. And in kissing, the two sides of the nose and mouth close contact is easy to cause each other inhalation of tuberculosis bacilli and the onset of disease. Therefore, it is not recommended for TB patients to kiss their girlfriends to avoid infection. Tuberculosis is contagious, patients usually need isolation treatment, if timely diagnosis, active treatment, most patients can be cured and good prognosis. If the diagnosis and treatment are delayed, the disease may progress and have serious consequences.