Surgery shall be performed in an independent negative pressure operating room, and the number of participants shall be limited. After entering the operating room, no one shall enter or leave arbitrarily. All supplies shall be in the charge of nurses outside the operating room. Intubation should be performed after anaesthesia. A disposable filter should be arranged between the tracheal intubation and the respiratory tract to reduce contamination of the respiratory tract. More attention should be devoted to protection when suctioning sputum, and suction should be performed in a closed environment. During the operations, the use of energy devices and energy power should be reduced, to limit aerosol caused by the devices. For examination, surgical specimens should be sealed in double-layered bag. After surgery, the operating room should be disinfected thoroughly, and it can be reused only after passing a sampling test by the infection management department.