It is convenient to operate the electronic files before the files are formed. It is convenient to add, delete, modify and so on, and does not leave any traces after modification, so as to ensure the tidiness of the archives page. Moreover, electronic archives are highly standardized, making it easier to retrieve electronic files. A paper file can only be read at a certain time and place, and electronic files can not be restricted because their processing environment is computer and network technology. The transmission time of electronic files on the network is calculated in seconds, while the transmission of paper files at the same distance is calculated in terms of days. The difference between the two speeds is very obvious. Moreover, the electron beam on a terminal can also be sent to a number of network terminals at the same time. The electronic file is not restricted by the storage carrier, which enables the user to feel a sense of sharing and get rid of the constraints of time and space. There is an increasingly intense contradiction between the unlimited growth of paper space and limited storage space. The space occupied by electronic files can solve this contradiction very well. For example, a CD can reach 600MB to 4 000MB, and can store 350 thousand printed or 100 thousand page graphic information. Moreover, if we do not move the storage carrier to process information, then the electronic files are almost weightless and volumetric. Compared with the cumbersome weight of paper documents, it is obvious. With the application of multimedia electronic computers, the forms of electronic files are also diversified. Text, graphics, sounds, images and other kinds of media information can be separately or mutually matched into the contents of electronic files, which results in the multimedia integration of electronic files, making electronic files more comprehensive, vivid and vivid than paper files. When copying, it is not easy to lose information. The copy of paper files or copy of microfilm often appear the problem of clarity reduction, distortion, information loss and so on. However, because of the digitalized information processing, there is almost no such problem. So it is completely possible to copy the electronic files without any difference from the original electronic files.