Upper jaw fracture; orbital fracture; endoscopy. The previous surgical method was unable to see clearly into the superior jaw sinus, resulting in blindness due to either overfilling of the sinus and stabbing the optic nerve with fragments of bone, or underfilling to achieve accurate fracture repositioning and persistent diplopia after surgery. Therefore, the clinical approach to the fracture of the upper jaw combined with the fracture of the infraorbital wall mostly uses the sublid lash incision route, repairing the fracture with titanium nail or titanium plate fixation or performing orbital floor bone grafting, etc. Nowadays, patients use the transverse incision approach to the upper lip and buccal vestibular sulcus intraorally, which is scarless after surgery and meets the cosmetic requirements and can also avoid the important vascular nerves of the face. The application of nasal endoscopy has greatly improved the intraoperative illumination in the superior jaw sinus, providing a clearer understanding of the fracture and the accurate degree of repositioning, avoiding facial scars caused by the incision under the lid lashes, and eliminating the need for titanium nails, titanium plate fixation or infraorbital wall bone grafting or filling with artificial materials, which reduces the damage to the patient and saves medical costs.