Apo B mainly exists on the surface of LDL, when Apo B increases, it will increase the incidence of coronary heart disease, the higher its value, the greater the harm to the human body, and need to be actively treated. Apolipoprotein B is mainly synthesized by the liver, mainly in low-density lipoprotein, also exists in very low-density lipoprotein, its main function is to transfer cholesterol in the liver to extrahepatic tissues for metabolism, which can cause atherosclerosis, and it is an important lipoprotein that leads to atherosclerosis, and it will make the incidence of coronary heart disease increase when apolipoprotein B is elevated. For high Apo B, should consult a doctor in time, standardized treatment under the guidance of the doctor, daily life should pay attention to low-salt and low-fat diet, enhance physical activity and sports, and prevent obesity.