Hyperventilation syndrome is a physical and mental disorder in which the patient’s fatigue and nervousness lead to plant nerve excitement, causing a faster respiratory rate. It makes the oxygen inhaled and carbon dioxide exhaled increase. However, the blood is saturated with oxygen, so the excessive oxygen is not exchanged into the blood, which is equivalent to excessive CO2 emission. And CO2 is the raw material for H2CO3 in the blood, so the blood H2CO3 decreases, disrupting the blood acid-base balance and triggering respiratory alkalosis. Patients can mostly experience tightness in the chest, chest tightness, near-death feeling, due to fear, hard breathing causing a vicious circle, also accompanied by dizziness, headache, impaired consciousness, drowsiness of the head, tonicity of the limbs, tremor, weakness, etc. First, psychological guidance, comfort the patient. Secondly, help the patient to relax the whole body and breathe evenly to reduce the discharge of carbon dioxide and relieve the symptoms. If the symptoms are severe, use a piece of cardboard around the patient’s mouth and nose in the shape of a horn to increase the ineffective cavity of breathing, so that the exhaled carbon dioxide can be re-inhaled into the body, thus improving the symptoms of alkalosis. If necessary, sedation is given to stabilize the patient’s mood. The above content is for reference only. Please refer to the doctor’s face-to-face guidance for specific medication and treatment.