Stretch marks are a normal physiological phenomenon that occurs during pregnancy, the common location of pregnant women’s abdomen, buttocks, upper thighs and the back of the calves, no need to worry too much. First, the cause of the formation of pregnant women with the increase in pregnancy weeks, 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 generally begin to appear in 5-6 months of pregnancy, but there are also individual pregnant women who gain less weight during pregnancy only appear in late pregnancy. Generally speaking, the severity of stretch marks is directly related to the size of the fetus and excessive weight gain. Weight gain is too fast, the larger the fetus, the more serious the skin layer fracture, the wider the stretch marks, the more obvious, touching the skin will feel the phenomenon of unevenness, often accompanied by tingling, warmth, slight swelling and pain feeling, is a normal phenomenon. Second, the treatment method 1, moderate nutritional supplement: you can eat a moderate amount of collagen-rich foods, such as meat skin, chicken claws, beans, fungus and so on. At the same time supplement rich in vitamin C, vitamin A vegetables, fruits, such as tomatoes, spinach, kiwi, green peppers, carrots, etc., on the prevention of the formation of stretch marks also have a certain effect; 2, skin care: Pregnant women should do a good job of skin care, often take a bath to keep the skin clean, and at the same time, after pregnancy, the skin is dry, so you need to pay attention to the skin moisturizing, you can smear the abdomen olive oil or moisturizing lotion; 3, control Weight: pregnant women’s weight growth is too fast and too much, 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 appropriate weight control. According to height and pre-pregnancy weight to calculate their own body mass index, calculated to suit their own weight gain during pregnancy, it should be noted that the early pregnancy weight gain of no more than 2 kilograms, the middle and late pregnancy according to their own body mass index, the weekly weight gain of 0.2-0.4 kilograms.