Lipids play an important role in the human body because they are key indicators of cell membrane composition, membrane stability, and energy metabolism. If the blood lipid is too low, it will lead to poor stability of the cell membrane, which will be easily damaged by exogenous factors and lead to malignant changes in the cells. In addition, the nutritional status of patients with low blood lipids will be poor, and they are prone to a variety of diseases. There are two reasons for low blood lipid: First, patients usually have strict dietary control, especially during the weight loss period of high fat content food eat too little, it will lead to low blood lipid. Second, patients take oral lipid-lowering drugs, no regular review of blood lipids or overdose of drugs can lead to a significant decrease in blood lipid levels.