Stretch marks are a normal physiological phenomenon that occurs during pregnancy and are commonly found on the abdomen, buttocks, upper thighs and the back of the calves of pregnant women. I. The reason for the formation of pregnant women with the increase of pregnancy weeks, the abdominal circumference and leg circumference will continue to increase, the skin elastic fibers and collagen fibers will be overstretched and damage or even rupture, the formation of stretch marks. Stretch marks usually start to appear in the 5th to 6th month of pregnancy, but some pregnant women who have gained less weight during pregnancy only appear in the late pregnancy. Generally speaking, the severity of stretch marks is directly related to the size of the fetus and the rapid and excessive weight gain. The faster the weight gain, the bigger the fetus, the more serious the skin fracture, the wider and more obvious the stretch marks, the touch will feel the unevenness of the skin, but also often accompanied by prickly itch, heat, slight swelling and pain, which is a normal phenomenon. The actual fact is that you can find a lot of people who are not able to get a good deal on a lot of things. At the same time, vegetables and fruits rich in vitamin C and vitamin A, such as tomatoes, spinach, kiwi, green pepper, carrot, etc., are also effective in preventing the formation of stretch marks. 2. Skin care: Pregnant women should do a good job of skin care, often take a bath to keep the skin clean, at the same time, the skin is dry after pregnancy, so you need to pay attention to skin moisturizing, you can apply olive oil or moisturizing lotion on the abdomen. 3. Weight: Pregnant women gain too much weight too fast, abdominal circumference increase is an important reason for the generation of stretch marks, so in the case of ensuring adequate nutrition, pregnant women should pay attention to proper weight control. According to the height and pre-pregnancy weight to calculate their own body mass index, calculate the appropriate pregnancy weight gain, it should be noted that the weight gain in early pregnancy does not exceed 2 kg, middle and late pregnancy according to their own body mass index, weight gain 0.2-0.4 kg per week.