Posterior circulation ischemia should be examined and treated in the neurology or cardiovascular department of a regular hospital. Posterior circulation ischemia is a kind of brain disease. Posterior circulation ischemia refers to transient cerebral ischemic attack and cerebral infarction in the carotid artery system of the posterior circulation, which is mainly caused by atherosclerosis leading to arterial narrowing of the vertebral basilar artery system. Patients with posterior circulation ischemia will produce more obvious discomfort symptoms, mainly manifested as dizziness, limb numbness and weakness, unsteady walking, falling and other symptoms, and some patients will have transient loss of consciousness and eye movement disorders. Antiplatelet drugs and statin lipid-lowering drugs can be taken under the guidance and advice of doctors for treatment, and common drugs include aspirin and simvastatin. When the patient has posterior circulation ischemia, he should go to the regular hospital to hang up neurology or cardiovascular internal medicine, and ask the professional doctor to carry out the correct treatment. When taking medication, you should follow the doctor’s instructions and not take it privately to avoid adverse effects.