With the development of multimedia technology and communication network, people can get information in ways that printed books can't provide. With the development of storage technology, massive information can be stored in chips or optical disks. Now an ordinary CD can store two complete sets of Encyclopedia Britannica. Multimedia software designers can not only combine animation, video images, sound and voice, but also provide hypertext and hypermedia links to help users find specific information or study a topic in depth. Virtual library on the information superhighway is the development direction of multimedia library. Readers can enter the virtual library, where they can browse, inquire, read the written materials and video materials of the library and hear the comments of commentators or experts. For example, Dorling Kindersley's virtual reality Lib software collects 8000 kinds of books and materials, and its software interface is like a large library, where readers can walk in a three-dimensional model building as real as a library, and there are three-dimensional walls and stairs in the virtual library.