Localized moderate stenosis of the right posterior cerebral artery p2 is a diagnosis of vascular abnormality of the posterior cerebral artery by angiography. Through MRI or cerebral angiography, it is found that the right posterior cerebral artery p2 segment has a filling defect compared with neighboring vessels, and the degree of stenosis reaches 50%~69%, which is a manifestation of moderate stenosis, and the corresponding condition mostly leads to the manifestation of insufficient blood supply to the right side of the brain, and may cause headache, dizziness and abnormal limb movement. The corresponding condition is mainly related to the thickening of the wall of the posterior cerebral artery, which is affected by high blood pressure and high blood lipids, so it is necessary to pay attention to the control of diet and regular review, and it is recommended to carry out standardized treatment under the guidance of the clinician, and it is important not to be negligent in order to avoid delaying the condition.