Low blood pressure can cause dizziness. If a patient’s blood pressure is lower than 90/60 mmHg, it is a serious hypotension, and the patient often has more obvious dizziness and some patients also have nausea. If low blood pressure exists for a long time, the relative lack of blood supply to the brain will cause dizziness, and even symptoms such as panic, chest tightness, shortness of breath, and weakness, etc. Some patients may even experience transient blackness before the eyes or fainting. Patients are advised to lie down and rest in time, and the dizziness will be gradually relieved after the blood supply to the brain is sufficient. If patients frequently experience hypotensive dizziness, they should promptly consult a cardiovascular physician, who can perform 24-hour ambulatory blood pressure monitoring and adjust medications or give treatment according to blood pressure values. In addition, patients who experience dizziness can also have their blood pressure measured to determine if the dizziness is caused by hypotension or hypertension.