Gas poisoning is carbon monoxide poisoning. Mild gas poisoning usually manifests itself as headache, weakness, vomiting, etc. Immediately move the patient to a ventilated area and give him/her sufficient oxygen, and pay attention to fresh air and nutrition after the patient is out of danger. Under the premise of ensuring safety, immediately open the windows and move the patient to a well-ventilated area with fresh air, while paying attention to keeping warm. Unbutton the patient’s clothes, keep the airway open, clean the secretions from the mouth and nose, and ensure that the patient has sufficient oxygen supply. When the patient is out of danger, try to go for a walk in a well-ventilated area to promote blood circulation and soothe the nerves at the same time. In terms of diet, consume more rice porridge and other fluids, and pay attention to eating fresh fruits to supplement nutrition, so as to recover health as soon as possible. In addition, when using heating devices such as coal or cooking indoors in winter, you must pay attention to open the windows and ventilation to maintain indoor air circulation and reduce the occurrence of gas poisoning.