Abstract: In order to combine components quickly and effective, a method based on agent mechanism which is free of programmed is presented here.Unifying the interfaces of components by being inherited from the same component's, using agent component as a middleware to connect the client and the combine components accomplish the analysis, decision-making, coordination and organization of external information.Methods and principle of standardized components, information storage and messaging are given in detail.The example of avionics system simulation shows that the method is feasible.