Abstract: Studies the construction of a model of networked control system,the Internet based shared control system.The system components and difficulties are analyzed,its techniques of control,network communication and resource sharing are discussed and their methods of implementation as to both software and hardware issues are given.The shared control system has been constructed and run effectively.It is easy to expand and has already been used in experimental teaching courses. The construction provided is proved to be feasible.Applications of the system enlarges as the number of shared units increases further.The share of control technology,plants and information resources will be realized.