Combined with four cases of the usual oral diseases,such as temporomandibular joint disorder, oral lichen planus, burning mouth syndrome, recurrent oral ulcer, this paper introduced Feng Xinghua’s clinical experience in the treatment of rheumatic-related oral diseases. Professor Feng believed that the treatment of these oral diseases should be based on the multi-disciplinary thinking of western medicine and the holistic concept of traditional Chinese medicine, and treated with the liver differentiation. Common prescriptions included Chaihu Shugan powder and Xiaoyao powder, etc.