The size of the face is actually a folk name for the asymmetry of the left and right faces, with one side being big and the other being small. First of all, we should consider whether the big face is normal or the small face is normal. Therefore, it is necessary to distinguish them first, carry out proper examination, and find out whether the size of the face is caused by bones or soft tissues. If the asymmetry of face and size is caused by bones, X-ray or CT examination should be carried out on the bones of the face to find out where the asymmetry of face and size appears. If X-ray or CT examination shows that there is not much problem with bones, it may be caused by muscles, soft tissues and fat. Therefore, if you want to correct your face, you must first find out the reason after the examination, and then rule out whether you have unilateral chewing, chin cupping, or other bad habits. If it is caused by bad habits, it can be solved by itself. However, if the cause of face size is not self-caused, but the skeletal muscle asymmetry caused by diseases or development itself during development, it cannot be corrected by its own methods. It is necessary to go to a regular medical institution for examination, find out the causes of the formation of large and small faces, and perform surgery, filling and other treatments to achieve good results.