Objectives : The aim of this study was to show the rationale of point-selection on acupuncture and moxibustion in the Mouth & Tongue Section (in the Oehyeong Chapter) of the Donguibogam. Methods : First, We summarized the causes of each disease in the Mouth & Tongue Section (in the Oehyeong Chapter) of the Donguibogam. Then, We explained the rationale of acupuncture point-selection referring to the cause of disease, physiology of the Oriental medicine, other uses of each acupuncture points in the Donguibogam, character of each acupuncture points, flow of meridian pathways and specific acupuncture points etc. Results and Conclusions : Total 20 acupuncture points were used in the Mouth & Tongue Section (in the Oehyeong Chapter) of the Donguibogam. Most of acupuncture points were specific acupuncture points. But, some rationale of acupuncture point-selection were explained by the cause of disease, physiology of the Oriental medicine, other uses of each acupuncture points in the Donguibogam, flow of meridian pathways etc.