Now, the information superhighway is being built all over the world. As an information superhighway, it is a networking facility for computers. However, the network facilities of electronic computers are not equal to the information superhighway. It refers to developing a more intelligent and advanced computer network system on the basis of multimedia and high technology. At present, China's financial system, tax system and many units and departments have built the information superhighway. In fact, it is only a computer's WAN or LAN, which is far from the ideal information superhighway. What is the information superhighway? The information superhighway should have at least five elements: three-dimensional, interactive, high-speed, wide-area and digital. The so-called three-dimensional, it is not like the highway on land, different types of cars driving at high speed, but through the computer network center to connect the computer nodes in the air, ground and sea radially, in which all kinds of information are transmitted at high speed. The so-called interaction means that people can talk to each other, and the current computer network can not provide two-way services at the same time; The so-called high speed is the information superhighway. As far as the current computer network is concerned, its computing transmission rate will be increased by thousands of times. For example, the British Encyclopedia Britannica has 33 volumes, and it takes 13 hours to transmit it in a computer. If you want to get on the information superhighway, it only takes 4.7 seconds to transmit once. The so-called wide-area information superhighway is a wide-area network marked by covering the whole country or a larger area or even the whole world, not referring to an industry or a place, not to the interconnection of computers in a unit or a building. The so-called digitalization means that the transmitted information, such as sound, image and text, has been digitized. Because digital transmission has high fidelity error correction function, it ensures the authenticity and accuracy of space-time transmission. Therefore, the information superhighway is a very complicated modern machine system, which is not based on one or several technologies, but on almost all modern high-tech multimedia and highly intelligent machine systems. It is the product of comprehensive application of various disciplines, knowledge and technology, the most advanced tool for production, life and social activities in human history, and a brand-new and vigorous productive force. "Multimedia technology" is a technology that applies digital technology and comprehensively utilizes various media to integrate the information recorded, disseminated and expressed by various media, and freely analyze and combine them into new information. The emergence and application of multimedia technology will greatly change the place, organizational form and even the whole mode of production, and fundamentally change the whole living environment of human beings. This will be another great information revolution in human history. Based on the understanding of the information superhighway, we can easily see that the information superhighway is a three-dimensional, wide-area, interactive, digital and highly intelligent multimedia information network system based on high technology such as computer technology and modern communication technology.