Stretch marks are the swelling lines of the skin during pregnancy. Stretch marks can be prevented by strengthening pre-pregnancy maintenance, dietary modification, weight gain control, the use of abdominal bands, appropriate exercise and other methods. 1. Strengthen the pre-pregnancy maintenance: pre-pregnancy should exercise, eat more food rich in high quality protein, enhance skin elasticity. 2. Dietary adjustments: eat a balanced diet, avoid overeating, eat more vitamins, minerals rich in fruits and vegetables, eat less too greasy, too salty, too sweet products. 3. Control weight gain: During pregnancy, you should control your weight gain and pay attention to the fact that the weight gain should not be too large. 4. Use a belly band: Proper use of a belly band can reduce the gravity of the abdomen, reduce the excessive stretching of the skin and prevent stretch marks. 5. Appropriate exercise: During pregnancy, you can take appropriate walks, slow walks and other exercises to slow down weight gain. If you experience any discomfort, you should go to the hospital in time and follow the doctor’s instructions.