If the patient inhales gas, depending on the amount, the treatment is also different, as follows: 1, inhaling a small amount of gas: you need to immediately go to the ventilation to breathe a lot of fresh air to see if the symptoms are relieved. If, after breathing fresh air for a period of time, the patient still has headache, nausea, vomiting, etc., oxygen therapy is required. 2, inhaling too much gas: the patient may appear coma, incontinence, cold extremities, blood pressure drop, shortness of breath and other symptoms, often suggesting that the patient’s condition is heavy. At this time, the first thing is to move the patient to a place with fresh air, let the patient rest, and pay attention to keep warm, and give high-flow oxygen when possible. If there is respiratory and cardiac arrest, artificial respiration, chest compressions, and timely transfer to the hospital for hyperbaric oxygen therapy, and also with mannitol, diuretics and other drugs to prevent the occurrence of cerebral edema.