Pyrexia is one of the most serious types of heatstroke, which is an imbalance in the body’s thermoregulation caused by exposure to a hot environment or strenuous exercise. Clinically, pyrexia is a type of heat stroke, mainly because the body’s thermoregulatory mechanism is damaged, resulting in the body’s heat dissipation dysfunction, resulting in patients with high body temperature and serious physiological abnormalities, often manifested externally as high fever, low sweat, blurred consciousness and other symptoms. The treatment of patients with pyrexia is usually based on physical and drug cooling. First of all, the patient’s body temperature should be rapidly reduced, and the patient can be quickly transferred to a low temperature environment, while following the doctor’s instructions to use chlorpromazine, benzodiazepine and other drugs for combined treatment. However, these measures can only temporarily relieve the symptoms, and the patient should be sent to the hospital for treatment.