Frequent low blood pressure can be caused by physiological factors, disease factors and drug factors. Physiological factors are mostly seen in thin women or the elderly, disease factors are mostly seen in malnutrition, chronic wasting disease, etc., and drug factors are mostly seen in vasodilators and antihypertensive drugs. 1. Physiological factors: mostly seen in thin women and the elderly, such people in addition to low blood pressure, the body does not have other uncomfortable symptoms, is a normal performance. 2. Disease factors: (1) malnutrition: if the patient’s long-term diet is not good, and he likes to pick food or partiality when eating, resulting in the body not being able to intake sufficient nutrients, resulting in insufficient blood volume, there will also be a low blood pressure phenomenon. (2) Chronic consumptive diseases: if the patient suffers from severe tuberculosis, severe heart failure, malignant tumors and other diseases, will produce nutritional depletion in the body, so that the patient will have low blood pressure for a long time. 3. Drug factors: if you often take alpha receptor blocking drugs, vasodilators, ganglion blocking drugs, antipsychotics and other drugs, are prone to induce low blood pressure, and the symptoms can be relieved after stopping the drugs. Frequent low blood pressure patients, it is recommended to consult a doctor in a timely manner, under the guidance of the doctor to identify the cause of the disease, so as to treat the symptoms.