Disease analysis: Carotid artery is a thick blood vessel. Its internal carotid artery directly supplies blood and oxygen to brain tissue, while its external carotid artery supplies blood and oxygen to five senses such as eyes, ears, nose and mouth. If the carotid artery is hardened, there are plaques on the blood vessel wall, which makes the blood flow poor. If it is not unobstructed, it will often lead to ischemia and hypoxia of brain tissue. Patients often feel dizzy, dizzy, poor memory and obvious decline in thinking ability. Over time, it will cause brain atrophy. If the hardened carotid artery has a thick plaque falling off, blocking the arterial blood vessels with blood flow, it will cause cerebral infarction, blindness, slurred speech, paralysis and other stroke manifestations, and even threaten life. Suggestion: You can take aspirin tablets, Danshen tablets and Ginkgo biloba leaves and drink plenty of water. Everyone should supplement at least 2000 ml of water every day and drink more vegetable soup, winter melon soup, tomato soup, mung bean soup and light green tea. It is best to drink a glass of water after getting up in the morning, before going to bed at night and before and after taking a bath to prevent excessive sweating from causing blood concentration and high blood pressure. In addition, the diet in summer should be light, eat less foods with high fat and cholesterol, and eat more fresh vegetables, fruits, bean products and laver. We should form healthy eating habits.