You have to check your face first and touch your chin with your hand. If it is hard, it means that your bones are big and you can only lose weight through surgery. But because you are young, you can try to sleep on both sides every night to exert pressure, but it takes a long time to verify, and you can't see the effect in just a few months. If you touch your face too much, you need to eat less snacks and chewing gum, because chewing too much will lead to chewing. If the face is swollen, you can eat more melon and watermelon for diuresis and drainage, and then massage both sides of your chin in circles with massage cream every morning and evening. If you have nothing to do, exercise your facial muscles at acupoints.