The concepts and principles of intelligent virtual controls(IVC) and virtual instruments based on them are introduced.The quintuple systematic model based on computer is discussed.By deep researching into the intelligent controls-oriented virtual instrument(ICVI) and its development system,the quintuple systematic model based on computer is introduced into ICVI systems,the uniform model of ICVI is built up and dissertated it in detail.The model builds uniform rules and methods for developing and using ICVI,and normalizes the development of ICVI.