Eagle's syndrome is often associated with elongated styloid process or ossified stylohyoid or stylomandibular ligament. Patients with this syndrome present with recurrent cervicofacial pain. Surgical removal of the elongated styloid process is a standard treatment and can be accomplished through either a transoral or extraoral approach. Both approaches have advantages and disadvantages, and the best surgical approach remains controversial. In our case, the elongated styloid process was removed by transoral approach assisted by endoscopy. Endoscopy provides clear surgical view thus lessen the chance of neurovascular injury and other intraoperative complications. Endoscopy-assisted transoral resection is an optional alternative surgical procedure for Eagle's syndrome.