Abstract: This paper presents a new intelligent control method, which simulates the process of human controlling a mixed-water valve. The control method adopts different control variables at different regulating time, which is similar to huamn's macro-regulating and micro-regulating process, and each control variable approaches to a constant at last. The parameters in this method have specific physical meaning and it is convenient to adjust them according to different control indexes. With this control algorithm, it is not necessary to know the precise model of the controlled objects, and good performance can be achieved even with heavy interference.