Most recently, attention has focused on adaptive interface in the human-computer interface domain. In this paper, several fundamental concepts of adaptive interface are introduced at first, then an adaptive mechanism of user interface is presented based on these concepts. The structure and technology of this architecture are discussed in detail. This architecture has been applied to GS-ICCC (GreatSky-Integrated CAD, CAPP and CAM), which is an integrated CAD/CAPP/CAM system. Some details when implementing this architecture are also described. The adaptive architecture of GS-ICCC has been implemented based on X-Window/Motif environments. It has been proved to be highly efficient.