The spread of fashion words is a sign of social progress. In the process of language communication, the mutated fashion words own rich expressions. One is in pursuit of a novel expression effect, enhance the appeal of language; the other is by the use of wrongly written or mispronounced characters, Letter words, Numbers, and reforming the old words, as well as graphical symbols, which are often able to express inner world that cannot be described by language directly. Not only enriched the modern Chinese vocabulary, but also expressed a variety of subtle emotional state of mind. But part of the mutated new words are gaming, expressing meaning is ambiguity and superficial. These words are easily caused misunderstanding of Chinese system. By the way of the language guide and language criterion, We can furtherly promote the innovation and development of the language.