Those who establish artificial airway – tracheotomy management operation points: 1, airway wetting: use ventilator to keep the nebulizer open, when the sputum is dry or when the ventilator is discontinued, then pay attention to intermittent drops into the airway (saline 2-10 ml / time, do not be afraid of choking, the drier the sputum the greater the amount needed). 2. Tracheotomy balloon pressure: keep the external bursa soft and inflated, and when the ventilator is discontinued, deflate the bursa and discharge all the gas. 3.Suction operation without negative pressure into the tube, reach a certain depth and start negative pressure suction when stimulating the patient to cough, usually once every 2 hours.