The main methods to prevent stretch marks are the following two: 1, control the baby’s weight, if the fetus is too big during pregnancy, it will lead to excessive stretching of the skin of the abdomen, which will cause the breakage of muscle fibers, and this is the real principle of stretch marks. The actual reason for this is the fact that it is a good idea to have a good idea of the size of the baby. 2, you can use some topical medication to prevent stretch marks, the more you use is olive oil, but there are individual differences in whether this works or not. The main thing depends on the elasticity of the pregnant woman’s skin, and the size of the fetus, and the thickness of the fat and so on. It is normal for stretch marks to grow during pregnancy, most of them do not grow in the early stages of pregnancy and only start to grow in the late stages of pregnancy, so it is very important to control your weight in the late stages of pregnancy.