Ethics of speech is one of the most important ethical features in a desirable society which is indebted to lots of factors such as cultural and social ones in general and in particular to administrators of culture and education. In this respect, as an auditory media, radio can play a key role in making culture of verbal ethics and spread it to individuals and societies. Direct and indirect human factors including producers, writers, correspondents, narrators, presenters, experts, and other effective factors in productive and live radio programs can make crucial steps in making the society moral as well as in religious teachings with precise and scientific perception and importance of media, especially radio. Professional ethics of media requires various factors and professionals especially macro policymakers in radio who recognize the examples of virtues, vices, and speech etiquettes in radio with emphasis on media ethics accomplished through education and promotion and provide the improvement of the conditions to achieve the required ethical results and purposes. Ethical challenges and conflicts in this area are also important. For instance, the fact that whether the radio administrators can ignore some ethical considerations such as non-proliferation of abomination or illegal joking and humoring then embark on producing the content is a clear example of these kinds of challenges that the paper intends to analyze.