The existing definitions about advertising, including definition of AMA (American Marketing Association, 1963), are difficult to explain how rapidly the Korean advertising industry environment changed. In this research, it was tried to re-defining the new definitions and ranges on advertising by mixed methods approach. Research result, the new two definitions of advertising were proposed, including “advertising is communication activity which delivers ideas, goods, and service contents through media to persuade a target audience.” Also, advertising ranges were classified eight media platform as followings; television, radio, newspaper, magazine, on line, out of home, sales promotion, sponsorship. Based on the research results, it was discussed on further tasks about the new definitions and ranges on advertising.