Small and dense LDL is a lipoprotein that has a strong ability to cause atherosclerosis, and it is important to pay attention to it because it can clarify the risk of cardiovascular and cerebrovascular diseases. Small dense LDL is a component of LDL, and if its value is significantly elevated, it indicates an increased risk of atherosclerotic cardiovascular disease, so it is important to pay attention to it when it is elevated. It is also important to pay attention to the elevation of LDL, cholesterol and triglycerides. When the value is still high after diet and exercise control, it can be treated with lipid-lowering drugs such as simvastatin under the guidance of a doctor, and it is recommended to consult a doctor in time to avoid delaying the condition.