This paper is a research on the reformation of the waste classification and settlement of the Korean waste catalogue and code (KWC) in order to enhance the confidence of waste management and statistics. The construction of waste data-base is an indispensable work for the optimal waste management. Present KWC have some troublesome problems, such as that is regulated by order and that is classified by waste composition, and etc. To accomplish the final goals of the waste management, the waste have to be classified by the 24-sorts of waste raw materials. And to consolidate the waste code, to manage the waste optimally, and to computerize the waste flux automatically, we design the waste code by 6-digit number containing waste source (2-digit) and waste characteristics (4-digit).