The common causes of crooked face include abnormal jaw development, enlarged biting muscle on one side, or excessive fat accumulation, etc. Corrective measures need to be taken according to the situation. 1. Abnormal development of jawbone: If abnormal development of jawbone leads to crooked face, you can remove excessive bone tissue through bone grinding or bone cutting surgery, so as to make both sides of the face become symmetrical. 2. One side of the biting muscle hypertrophy: some people often use one side of the teeth to chew food, which easily leads to biting muscle hypertrophy, thus appearing the phenomenon of crooked face, this situation can be improved by injecting botulinum toxin or undergoing biting muscle removal surgery. 3. Excessive fat accumulation on one side: If there is more fat accumulation on one side and the fat is thicker, resulting in a crooked face, the excessive fat can be extracted through lipolysis or liposuction to improve the problem of crooked face. Crooked face may also be caused by other reasons, such as malocclusion, it is recommended to go to a regular hospital, a clear diagnosis, and then targeted use of the appropriate corrective program.