Background: Today, media has a highlighted position in national, regional and international area. Along with development of media, legislation for media will be clearly necessary. There is no doubt that lows are necessary for providing regulations in society, but not enough. Experiences show that, more than laws, internal supervision is important.

A professional ethics code is one of the internal supervision. These codes that edited by media agents have key roles in achieving goals in media. In this study, the normal theories in media have been considered and codes of ethics in media in other countries have been considered. This study aims to provide codes of professional ethics in media.

Conclusion: Studies show that trust of audience to media agents is necessary. Managers and media agents know that how ethics is important in maintaining the trust. Then they use some strategies   to   control their activities. Therefore, providing codes of professional ethics in media is so necessary.