This document presents a case for orthognathic surgery. It summarizes the patient's background information, chief complaint of forwardly placed upper front teeth, dental and medical history, examination findings including facial analysis and cephalometric measurements, problem list of maxillary prognathism and mandibular retrognathism, investigation results, diagnosis, and proposed treatment plan of bilateral sagittal split osteotomy (BSSO) and anterior maxillary osteotomy (AMO) to correct the class II div I malocclusion.