There are primarily three factors influencing the stylistic varieties:field of discourse,mode of discourse,tenor of discourse. The varieties of social relations may directly work on the speaker’s phonetic,vocabulary,sentence pattern and etc. These varieties consist of formality,politeness,impersonality and accessibility. When a speaker converses with different subjects in different occasions,the language he has chosen will vary greatly. Regarding this point,the author does not intend to provide the readers with accurate data,but a general analysis of legal documents and advertisements respectively on the following major levels.