The present invention relates to smart wear using a flexible display panel and, particularly, the present invention comprises: clothes provided through any one method between a method by which the flexible display panel is attached and fixed to a portion of or over the entire outside of a lining of the clothes or a method by which the flexible display panel forms the clothes; and a control unit for storing design information containing various colors or textures for each pan of the clothes as a video or images and outputting the design information to the flexible display panel according to settings. Accordingly, various designs can be implemented for clothes having the same shape, and thus a higher degree of design freedom can be provided to a designer so as to increase the value of the clothes, and a person who wears the clothes can create various styles with the same clothes.