In the course of the development of English language, people have different attitudes towards slang. Slang is in a dynamic process of constant development. People often use slang out of their instinctive desire for fresh expressions, and slang continues to evolve in their use. Slang has various forms and rich characteristics. Slang not only adds many new words and expressions to the English language, but also has unique functions. Understanding the semantics and style of slang is of profound significance to improving the comprehensive language knowledge of English learners and to understanding the cultural information and lifestyle of English‐speaking countries.