High-low face may be caused by long-term use of unilateral chewing, and may also be caused by growth and development asymmetry, which can be corrected by improving chewing habits or surgery. 1. Long-term use of unilateral chewing: long-term use of unilateral biting muscle chewing, can lead to high and low face, this is due to the long-term use of unilateral biting muscle, making unilateral biting muscle is more hypertrophic, so there is a facial asymmetry, this situation only need to improve the chewing habits can be corrected. 2. Growth and development asymmetry: most people will have a slight growth and development asymmetry, this situation leads to the high and low face is generally not very obvious, most people do not need treatment, if there is a need for correction, you can achieve the corrective effect of plastic surgery to grind or cut the bone. If you have a need for correction, you can achieve it through plastic surgery by grinding or chipping the bones. If you still need to correct your high and low face after eliminating it due to bad habits, you should go to the hospital and ask the doctor to find out the cause before following the doctor’s instructions.