High blood pressure in winter and low blood pressure in summer may be a normal physiological phenomenon, without treatment. It is recommended to monitor the blood pressure, if the patient’s blood pressure exceeds the normal value three times not on the same day, it is necessary to take general measures to regulate, and if necessary, to carry out drug treatment. In winter, when the weather temperature is low, the blood vessels of the body will be contracted, and the resistance of blood circulation will be increased, the renal blood flow will be reduced, and the body is prone to water and sodium retention, which will lead to an increase in blood pressure. In summer, the weather temperature is too high, the body sweats a lot, the blood circulation speed is fast, the blood vessels will be dilated, so the blood pressure will be relatively low, which is a normal physiological phenomenon, can not be treated. If the patient’s blood pressure is elevated in winter and not measured three times on the same day, and the systolic blood pressure is more than 140mmHg, and/or the diastolic blood pressure is more than 90mmHg, it is necessary to control the salt intake, and appropriate physical exercise should be carried out every day. If the patient’s conditioning through general measures is ineffective, calcium antagonists such as felodipine and nifedipine can be used as prescribed by the doctor. It is recommended that the organism has high blood pressure in winter and low blood pressure in summer needs to consult a doctor in time, and the doctor will judge whether it is necessary to take measures for treatment according to the patient’s physical condition.