Mandibular angle plastic surgery is a plastic surgery that scientifically removes excess bone tissue from the inside of the mouth, re-sculpts the curve of the mandibular angle, and improves facial condition. For mandibular angle plastic surgery, if the plastic surgeon's skills are not up to standard and the operation is performed improperly, it is easy to cause left-right asymmetry in the sequelae. It is recommended to go to a regular plastic surgery institution which is safer and more reliable.