Abstract: Most of the current intelligent control methods are dependent on trial and error methods in worksite to determine the construction and parameters of the controller, without an integrated idea of controller design in prior. In this paper, a new method "intelligent control method based on description of plant characteristic model" is presented. The main idea of this method is to design the intelligent controller on the basis of the description of plant characteristic model and control requirements. This method is simple and feasible, and does not need trial-and-error. The paper first introduces the background of the method ,then gives the intelligent controller design procedure and the theory proofs, and finally, some applications are demonstrated there.