The home should be frequently ventilated if there is a patient with tuberculosis. Clothes worn and books read by TB patients can be irradiated by ultraviolet light to destroy pathogens. Tableware used by TB patients can be boiled and heated to kill pathogens. Viruses attached to the surface of objects can be eliminated by spraying with 70% ethanol. Tuberculosis is a disease transmitted mainly through the respiratory tract. Microdroplets of Mycobacterium tuberculosis can be spread into the air by the patient’s coughing, sneezing, talking, laughing, singing, etc., and remain in the air for several hours, or can be attached to the surface of objects. Mycobacterium tuberculosis is relatively resistant and is generally infectious on surfaces or dust for 8-10 days, and can survive in dry sputum for 6-8 months.