Hypoechoic plaques are soft plaques. Hypoechoic plaque is a description of the arterial vasculature produced by the use of color ultrasound. There are two main types of plaques: soft plaques and hard plaques. Hard plaques take a long time to form, have calcification and show strong echoes. Soft plaques have a short formation time and are less dense and hypoechoic. Soft plaques are prone to erosion and easy to fall off, which may cause serious consequences of cerebral infarction or myocardial infarction. Once the plaque is formed, it indicates that atherosclerosis has occurred in the arterial vessels, all of which need to control the risk factors of atherosclerosis, such as blood pressure, blood lipids, and blood glucose, to keep these risk factors within the target range. If there is plaque detachment prone to cardiovascular disease, if necessary, need to be under the guidance of a doctor, thrombolytic therapy.