Mandibular angle plasty is to correct mandibular angle hypertrophy through surgical osteotomy, bone grinding and masseter muscle resection. It is a facial contour reconstruction operation, which transforms a square face or trapezoidal face into an oval face. Maxillary angle plastic surgery medical beauty tip: This operation is technically difficult, risky and traumatic, and it belongs to the fourth-level project in the classification of medical beauty projects of the Ministry of Health, and should be carried out in regular hospitals.