Insufficient blood supply to the brain dizziness may be atherosclerosis, cervical spondylosis, heart failure and other reasons, need to address the cause of the medicine or surgery and other treatments. 1. Atherosclerosis: long-term high blood fat leads to atherosclerotic lesions, involving the internal carotid artery and vertebral artery, the lumen of the plaque and narrowing, resulting in insufficient blood supply to the brain. It can be treated by taking medicines such as aspirin, clopidogrel, atorvastatin, etc., or by surgical procedures such as endarterectomy and arterial stenting. 2. Cervical spondylosis: cervical vertebral hyperplasia and degeneration, cervical disc herniation and other factors lead to compression of the surrounding adjacent vertebral arteries, resulting in local stenosis, so the brain blood supply is insufficient. It can be treated with drugs such as 20% mannitol, nimodipine and ginkgo biloba extract, or by traction, massage and physiotherapy, or by surgery. 3. Heart failure: the patient’s heart pumping function decreases, the brain, kidneys and other important organs have insufficient blood supply, can use digoxin, isosorbide nitrate, furosemide and other drugs to treat. Pay attention to the use of drugs under the guidance of a physician.