1. A scientific information viewing system comprising an uploading computer for uploading scientific information which is information relating to scientific fields, a host computer for storing the scientific information, and a viewing computer for viewing the scientific information, the computers being interconnected through communication lines, wherein: said uploading computer includes first display/input means for displaying and inputting the scientific information; said host computer includes storage means for storing the scientific information as hierarchized at at least three levels of field, category and software product, and search means for searching and retrieving given scientific information from said storage means; said viewing computer includes second display/input means for displaying the scientific information and inputting search information for searching the scientific information; said uploading computer transmitting the scientific information inputted by said first display/input means to said host computer through one of said communication lines; said host computer hierarchizing the scientific information and storing the scientific information in said storage means; said viewing computer transmitting the search information inputted by said second display/input means to said host computer through the other communication line; said host computer searching the scientific information stored in said storage means, based on the search information, and transmitting search results to said viewing computer through the other communication line; and said viewing computer displaying the search results for browsing.