Insufficient blood supply to the brain caused by low blood pressure can result in dizziness, headache, fatigue, depression, memory loss, and visual impairment. Low blood pressure can lead to reduced cerebral perfusion, causing insufficient cerebral blood supply and symptoms such as dizziness, headache and nausea. Prolonged insufficient cerebral blood supply will lead to memory loss and lack of concentration. Ischemia of brain tissue due to insufficient cerebral blood supply occurs in the internal carotid artery system, causing weakness of the limbs, and even loss of vision, blurred vision, and hemianopsia. Occurring in the posterior circulation, causing insufficient blood supply to the cerebellar brainstem, it will lead to confusion disorder and damage to the brainstem, which can lead to symptoms such as vertigo, ataxia, nausea and vomiting. When the above symptoms occur, it is recommended to go to the hospital in time and get timely treatment according to the doctor’s advice.