Abstract: Cyber-Physical System(CPS) is a next generation intelligence system based on the technology of network and embedded system. Architecture frame is the key technology of CPS. We analyzed the concept and features of CPS, proposed a three-layers architecture frame. They are physical layer, network layer and application layer. We discussed each layer, introduced the description of layers. The threclayers architecture frame was proved to be congruent to concept and features of CPS by the experiment in intelligent traffic system. The three-layers architecture frame can be the direction of research in CPS in the future.

Key words: Cyber-Physical System(CPS)，Architecture