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 and the character of RRU, this paper proposes the concept-CCS (component candidate set). The scheme of creating component candidate set is based on the BP 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 model, this paper describes the running state of component, self-determination running and adaptive evolution operation. Simulation experiment showed that this CCS-based method is precious and effective.