Most of the high blood lipids before pregnancy are aggravated after pregnancy. It is mainly related to higher nutritional intake and hormone levels during pregnancy. Nutritional intake is due to the fact that during pregnancy, especially after mid-pregnancy, pregnant women need more nutrients than normal people, so food intake will increase significantly, especially high protein, high-fat foods, which will cause high blood lipids during pregnancy. Hormone levels due to pregnancy after the body’s hormones will appear changes, and normal people have a relatively big difference, the hormone can indirectly affect the body fat, promote fat decomposition and metabolism, then it may also cause a temporary increase in blood lipids. If the blood fat is high before pregnancy, then the blood fat is more likely to rise significantly during pregnancy. This situation should be timely pregnancy test, if the blood fat is high, we should properly control the diet or use drugs to regulate, to avoid adverse effects on the pregnant woman and the fetus.