Insufficient blood supply to the head often refers to insufficient blood supply to the cerebral arteries, and common causes include cervical spondylosis, cerebral atherosclerosis, cerebral arterial stenosis, etc. Medication and surgery can be chosen according to the cause of the disease. 1. Cervical spondylosis: patients with vertebral artery-type cervical spondylosis may suffer from insufficient cerebral blood supply due to compression of vertebral arteries by protruding cervical intervertebral discs and cervical vertebral osteophytes. Patients can take flunarizine and other vasodilators, and those with severe symptoms can have surgery, such as anterior cervical discectomy, spinal decompression and internal fixation surgery to relieve the compression. 2. Cerebral atherosclerosis: cerebral atherosclerosis can lead to insufficient blood supply to the brain, patients can take lipid-lowering drugs, such as atorvastatin, etc.; aspirin, clopidogrel, and other antiplatelet aggregation drugs, to prevent thrombosis. 3. Cerebral artery stenosis: If the insufficient blood supply of cerebral arteries is caused by severe stenosis of internal carotid artery or blood theft of subclavian artery, surgical treatment is needed. Commonly used methods such as endovascular stent implantation and endovascular debridement improve the symptoms of cerebral arterial insufficiency by improving the stenosis of the internal carotid artery or blood theft from the subclavian artery. Cerebral arterial hypoperfusion may also be caused by other reasons. Patients with cerebral arterial hypoperfusion are advised to consult a neurologist and follow the doctor’s instructions for examination and medication.