Lipoprotein A is an indicator of lipids in the biochemical examination of the human body, and if this indicator is high, it is actually a serious case of hyperlipidemia. Hyperlipidemia can cause atherosclerosis of many large arteries in the body, especially the coronary arteries of the heart, bilateral internal carotid arteries, and vertebrobasilar arteries, and cerebral arteries, which can directly cause coronary atherosclerotic heart disease, carotid artery stenosis, vertebral artery stenosis, and middle cerebral artery plaque formation stenosis, further leading to cerebral thrombosis, forming cerebral infarction and myocardial infarction.