A playlist search method includes: using, as search criteria, one or more pieces of content attribute information of a first content contained in a first playlist to search for a second playlist which contains a second content having one or more pieces of common content attribute information with the first content and is different from the first playlist; obtaining the first playlist and the second playlist; and displaying a plurality of contents contained in the first playlist and the second playlist in such a manner that the first playlist and the second playlist cross each other with the first content and the second content used as a base point.