Blood pressure is high and low according to the cause of the selective use of drugs, if it is physiological factors, no need to use drugs, if it is due to pathological factors, you can follow the doctor’s instructions reasonable use of drugs, the specific use of drugs need to be based on the actual situation of the patient to judge. First of all, normal people’s daily blood pressure will fluctuate slightly due to temperature, emotion and other factors, if the patient’s blood pressure check that day found that the blood pressure is high and low, but the systolic blood pressure did not reach 140mmHg, or diastolic blood pressure did not reach 90mmHg, and the fluctuation of blood pressure is not more than 20mmHg, then generally do not need to use medication to consider the above temperature and other physiological factors affecting the cause of the treatment. If it is caused by irregular medication, the patient should be treated with reasonable medication according to his/her own situation. If malnutrition, constipation, diabetes and other factors lead to high and low blood pressure, you need to clarify the cause of the disease, according to their own situation, under the guidance of the doctor to take targeted treatment. Patients with high or low blood pressure are advised to consult a doctor for examination to identify the specific cause, and avoid unauthorized use of medication before confirming the diagnosis of high blood pressure.