The present invention provides a data management system. More specifically, the present invention relates to a keyword-based data management system and method for managing and utilizing multiple pieces of data generated when application programs executed in various types of computing apparatuses are used, and improving a management environment. Proposed according to an embodiment of the present invention is a new procedure for selecting a keyword-of-interest storage before an operation of using a computing apparatus, by classifying data used or collected in the past and storing the same in a keyword-of-interest-based storage. Accordingly, a user can easily access collected data associated with his/her interest, which leads the user to systematically manage data in which the user is interested, and delete and dispose of data in which the user is not interested.