Objectives : This study aimed to understand the characteristics of the cases covered in the case studies on traditional Korean medicine (TKM) and furthermore, to provide basic information that can lead the discussion on 'what cases are worth reporting' in future case reports. Methods : Case reports on TKM were searched using the OASIS. The searched researches were analyzed according to the type of case, including information on disease/symptoms and intervention. Results : A total of 940 researches were searched. The most frequently reported type of case study was the report on the effectiveness of intervention. Case reports, which were only two cases in the 1970s, increased rapidly in the 2000s, and in particular, 314 cases within the last five years accounted for about 33% of the total literature. As for the number of studies by disease, the cases dealing with musculoskeletal diseases such as spine, shoulder and knee joint disorders were the most prevalent. Besides, there were many case reports related to cardiovascular, gynecological, cancer, psychiatric, and dermatological diseases. In a total of 51.9% of the included case reports, a combination of two or more Korean medical treatments such as acupuncture and herbal medicine was used at once, and western treatment was used with Korean medical treatment in 28.2% of the studies. The types of Korean medical treatments were varied, such as acupuncture, moxibustion, pharmacopuncture, electroacupuncture, Chuna, acupotomy, herbal medicine, external preparation, and psychotherapy. The main purpose of the publication of the included case reports was analyzed as a report of TKM treatment for rare diseases, or the application of TKM treatment to diseases or symptoms that are "uncommon in TKM treatment" even if it is not a rare disease. Conclusions : Case reports have the strength of generating new scientific hypotheses by detecting the basic needs and novelty of medicine. The current case studies of TKM do not seem to be sufficient to highlight these strengths. It is necessary to discuss which cases are reported as cases of patients worth publishing, and based on this, it is necessary to activate case studies of TKM by utilizing diagnostic tools and science technology.