Pregnant women can prevent stretch marks during pregnancy by controlling their weight reasonably and applying topical items, etc. However, there are some individual differences in the growth of stretch marks during pregnancy, and it is not that these methods are always useful. 1. Reasonable weight control: Pregnant women need to strengthen nutrition during pregnancy to ensure the growth and development of the fetus. But the diet should be careful, can not eat too greasy, sugar content is too high in food, these foods will easily cause excessive weight gain. Meanwhile, if you are in good health, you can exercise appropriately to control your weight within a normal range. 2. Apply topical items: You can apply olive oil and other skin moisturizing items on the skin of the abdominal wall to lubricate the skin, thus reducing the breakage of elastic fibers and reducing the appearance of stretch marks. It is recommended to eat reasonably during pregnancy, go for delivery checkups on time and keep a good mindset.