The elimination of tuberculosis bacteria plays a more important role in preventing the widespread spread of tuberculosis, and the commonly used elimination methods at present mainly include ultraviolet light elimination, chemical spray elimination and high temperature elimination. 1. Ultraviolet light elimination: It is mainly used to eliminate the patients’ wards, etc., and kill the tuberculosis bacilli through the energy of ultraviolet light; the pathogens are more sensitive to ultraviolet light, and most of them can be eliminated in about 30 minutes. 2. Chemical spraying: apply chemical sprays (peroxyacetic acid, 70% alcohol, etc.) to spray the high-risk environment in all directions, and the tuberculosis bacilli in the corresponding environment can be killed to a great extent. 3. High-temperature elimination: some medical equipment and instruments can be eliminated by high-temperature steaming; patients’ sputum and special supplies can be eliminated by cauterization. In daily life, we should try our best to avoid too much close contact with tuberculosis patients, and once the symptoms of cough, low fever and night sweating appear, we need to consult a doctor in time for observation, and carry out standardized treatment after diagnosing the disease, so as to avoid the delay of the disease.