What department to see for low blood pressure needs to be judged according to the specific symptoms of the patient, if it is low blood pressure during pregnancy, no treatment is needed. If the patient has palpitations (rapid heartbeat, often accompanied by panic), dyspnea and other symptoms, you can hang up cardiovascular medicine, if there is weight loss, fatigue and other symptoms can hang up endocrinology. 1. If the patient with low blood pressure is in the period of pregnancy, the symptom of low blood pressure is a normal physiological phenomenon, and there is no need to register at the hospital for treatment. Generally, blood pressure will return to normal after delivery, so there is no need for treatment. 2. If the patient with low blood pressure also has palpitations, dyspnea, chest tightness or shortness of breath, fatigue, swelling, angina, etc., it is considered to be caused by congenital heart disease, and the patient can go to the Department of Cardiovascular Medicine for registration and consultation. 3. If low blood pressure is accompanied by weight loss, fatigue, tachycardia and other symptoms or excessive sweating, hyperphagia, diarrhea and other symptoms, it is considered to be caused by hyperthyroidism, and the patient can go to the Department of Endocrinology for consultation. When the patient has low blood pressure, if it is caused by pregnancy, no treatment is needed. It may also be caused by primary hypotension, patients can go to the cardiovascular medicine department, but the specific department needs to be judged according to the hospital subspecialty, patients should consult the hospital in time.