Abstract: As a result of the research and design of Reconfiguration Router Unit (RRU), the producing of network equipment is turned into component composition as building block. Based on the component composition,the character of RRU, and situation that the third-party manufacturers provide components for a large number of the component library led to the rapid expansion of the difficulties of the urgent need to provide components,this paper proposes the CCS (Component Candidate Set). Based on the difference between the static load and dynamic load, the scheme of creating component candidate set is based on the neural network. The CSS is proposed to resolve the problem of automation and dynamic in the process of RRU component composition. According to the CCS, this paper describes the running state of component, self-determination running and adaptive evolution operation. Simulation experiment shows that this CCS-based method is precious and effective. The method that be successfully used in the reconfiguration router unit proves that the method is practical.