Abstract: The pattern-recognition course is to the categorised course which inputs the mode, kind is essence of the mode, it is generally acknowledged the vector quantity of the characteristic is a generalization of the mode, because of this understanding, Make the computer discern accurately the mode is difficult for some one kind, the problem lies in on the basis of what characteristic vector quantity summarized the human discernment activity is never, But because of the understanding that input a certain side of the mode, then it is similar to utilize, merge, discern in coordination. The operation principle of this mechanism and Agent is extremely similar, this text has analysed that summarizes the difficulty brought toward pattern-recognition of mode, on the basis of the concept of the parameter of the preface while studying in coordination, provide the frame of pattern-recognition based on Agent APRF(Agent orientation Patten Recognition Frame).