To provide a brand ranking system and method that can support brand ranking by simultaneously outputting the amount of advertisement and the number of blog articles both triggering response to brands.

A blog data collection part 23b collects blog data from predetermined blog sites 12-1 to 12-n on the Internet 11 and stores the blog data in a blog database 25. Advertisement data on brands is also stored in an advertisement database 24. A search processing part 22b acquires advertisement data and blog data from the advertisement database 24 and blog database 25 in a predetermined period, respectively, on the basis of a search keyword, and a display processing part 22a simultaneously displays transitions of the amount of advertisement and the number of blog articles related to the keyword.