“ChaoYu” is a subset of a language’s lexicon that is generally considered in society to be impolite or offensive. It can show strong or intense emotion. It can take the form of words, expressions or other social behaviors that are construed or interpreted as rude, vulgar or other forms. Although the use of “ChaoYu” is still controversial, many scholars believe that “ChaoYu” should have their own “identity”, and will not make the people language level is reduced. Language is a product of convention, on behalf of the era and culture; as long as eligible for public use generally accepted, it should be included in the dictionary.