Heat stroke is characterized by dizziness, headache, thirst, excessive sweating, nausea, vomiting, chest tightness, palpitations, and weakness of the limbs. Heat stroke is usually caused by prolonged work or activity in a hot environment. The symptoms of heatstroke vary in severity and manifestation. In mild cases, symptoms such as dizziness, chest tightness, sweating, thirst, nausea, and fatigue may occur. Usually it is enough to get out of the environment in time and carry out rehydration treatment. In case of severe heatstroke there may be fever, the body temperature will be higher than 38 ℃ or more, and in severe cases there will be hyperthermia, and the patient will have coma, convulsions, incontinence and other manifestations, and there may even be dysfunction, cardiac arrest, respiratory arrest, acute renal failure and so on. If severe heat stroke occurs, the patient should be sent to the hospital immediately for emergency treatment, which can save the patient’s life. Therefore, if heatstroke occurs, dizziness, nausea and other symptoms, should be promptly to the hospital for treatment.