Arterial plaque is caused by abnormal metabolism of lipid substances in the blood and deposition in the intima of arteries. The elasticity of blood vessels decreases accordingly after the appearance of arterial plaque, and the blood vessels harden. Enlarged plaques also cause changes in the internal diameter of the blood vessels, resulting in stenosis or even occlusion-like changes. The current treatment of subclavian artery plaque is mainly divided into conservative treatment and surgical treatment.1. Conservative treatment: mainly based on drug treatment, oral antiplatelet drugs, such as aspirin enteric tablets, clopidogrel, etc., and also oral lipid-lowering drugs, the main lipid-lowering drugs are atorvastatin calcium, conservative treatment is suitable for patients with mild symptoms. For patients with significant narrowing of the internal diameter of the blood vessels, or even when there is ischemia of the upper limb arteries, dizziness, head confusion and other manifestations similar to the blood-stealing syndrome, active surgical treatment is required.2. Surgical treatment: The commonly used method is endoluminal treatment, through guidewires, catheters, balloons and stents, to open the narrowed and occluded subclavian arteries and keep the blood flowing smoothly, together with drug treatment. For subclavian artery plaque, regular follow-up is needed, usually every six months or every year to review the ultrasound to clarify the lesion.