The goal of this study is to examine characteristics and status of cable TV and propose plans for development of cable TV advertising. Cable TV occupy a position as a main advertising media with increasing cable TV subscribers. But many subscriber by tier, the lack of good quality program, the saturated subscriber, competition with new media, low reach, concentration of specific genre and increase of informercial are indicated as problems. Conclusively, we can suggest that manufactured program by PP, production of good quality program, effort for expansion of cable TV advertising market, development of strength of cable TV advertising, production of advertisement including own character of cable TV for development of cable TV advertising in future. In further study, we will hope to be achieved researches which are comparison of Cable TV between new media such as DMB, IP-TV, power analysis of cable TV as a advertising medium and development plan of cable TV in related in IP-TV including practical meaning.