Objectives: This report reports a clinical case of a patient with recurrent aphthous stomatitis (RAS) for 10 years who was completely cured using Korean medicine. Methods: A male patient with terribly severe RAS was hospitalized, and then treated with Jibaekpalmi-hwon, indirect moxibustion (KI 1 and CV 4) and acupuncture. The clinical outcome was observed by self-reported VAS measurement and macroscopy. Results: The severity of stomatitis became improved gradually and completely recovered during 17 hospital days, and RAS has not recurred for three months as an outpatient. The blood test including complement activity was in the normal range. Conclusions: This case report provides information about a therapeutic effect of Jibaekpalmi-hwon and Korean medicine on RAS.