Gas poisoning patients need to take first aid measures and hospitalization standard treatment, first aid measures include detachment from the poisoned environment, lying on the side, cardiopulmonary resuscitation, etc., hospitalization standard treatment includes mechanical ventilation, hyperbaric oxygen therapy, and medication and so on. 1. First aid measures: (1) Get out of the poisoned environment: when you find others poisoned, you should immediately turn off the gas source, open the window immediately to ventilate the room, and transfer the patient to a safe and ventilated place. (2) Lateral vomiting: When there is vomiting, the patient’s head should be tilted to one side, and the secretions in his mouth and nose should be cleaned up in time to avoid accidental inhalation. (3) Cardiopulmonary resuscitation (CPR): If the patient’s breathing, heartbeat is weak or even stops, CPR should be performed immediately until the arrival of medical personnel. 2. Hospitalization and standardized treatment: (1) Mechanical ventilation: For patients with respiratory failure in gas poisoning, mechanical ventilation is necessary. (2) Hyperbaric oxygen chamber: Hyperbaric oxygen chamber treatment is conducive to improving the condition, facilitating rescue and reducing sequelae. (3) drug therapy: such as elevated cranial pressure patients can apply mannitol to lower cranial pressure, respiratory failure patients can be based on the condition of the need to apply respiratory stimulants or hormone therapy. It is important to open doors and windows to ventilate and transfer patients to a safe and ventilated area. At the same time should be timely medical treatment, remember not to abuse drugs, so as not to increase the difficulty of subsequent treatment.