Kwan-ching is a characteristic phenomenon frequently appearing in East-Asian materials. However, the cataloging rules in Korea, Japan, and Taiwan provide many differences for the treatment of Kwan-ching. Redefinition of the term Kwan-ching is suggested, and the processing of it in description, in headings, and in the MARC format is also investigated, based on the comparative analysis of the main cataloging rules. It is recommended that Kwan-ching be entered before the title proper in parenthesis, added entries be made both under the title including Kwan-ching and under those excluding it, and that attention be paid to the processing of Kwan-Ching in the MARC format.