Literature is a carrier to record human knowledge by means of words, figures, symbols, audio and video, and it can also be understood as knowledge solidified on a certain material carrier. It can also be understood as the floorboard of all social historical materials in ancient and modern times. Now it is usually understood as the sum of books, periodicals and other publications. Literature is the most effective means to record, accumulate, spread and inherit knowledge, the most basic and main source of information in human social activities, and the most important source of information exchange and dissemination.