The main causes of dizziness, blurred vision and brain swelling are considered in the following aspects: First, it may be caused by overuse of the brain, mostly related to overwork and mental tension of the patient. The second aspect, if the patient often has the symptoms of dizziness, blurred vision and brain distension, it should be considered as neurological weakness, usually the patient is in a state of insomnia at night, lack of sleep, poor sleep quality, it is easy to have the symptoms of dizziness, blurred vision and brain distension. The third aspect is that the patient’s dizziness, blurred vision and brain swelling may be related to systemic diseases, such as hyperlipidemia, hypertension and hyperglycemia, which may cause the patient to have such symptoms. The fourth aspect is to consider whether the patient has cerebral vascular stenosis and cerebral arteriosclerosis, which lead to the manifestation of insufficient blood supply to the brain.