Abstract: By considering the connotation of the user＇s need of subject, this paper summarizes that the user＇s need of subject has pluralism, specialty, hidness and timeliness features, puts forward the basic paradigm of subject us-er＇s needs mining, which is combining the microcosmic mining method and macroscopic analysis method, omnibearing exposing the need of the subject users, ensuring the precise positioning of subject service.

Key words: subject service; subject user; demand analysis; requirement mining