Apolipoprotein a1 is an important component of HDL. A high level of apolipoprotein a1 in the organism indicates that HDL is at a high level, and the risk of cardiovascular and cerebrovascular disease will be reduced, which is a good thing. Apo a1 accounts for about 65% of the protein in HDL, which can represent the level of HDL, and HDL mainly transports cholesterol from peripheral tissues to the liver for metabolism, which is the main mechanism of anti-atherosclerotic effect. If ApoA1 is low, it will lead to low HDL, which increases the risk of cardiovascular and cerebrovascular accidents, so high ApoA1 is a good thing. If ApoA1 is low, it is necessary to consult a doctor in time, pay attention to a low-salt and low-fat diet in daily life, and avoid excessive intake of fats and oils.