With the development of online education, the pattern of education which based on the Internet obtained the general recognition of the society. People prefer to learn and share the open courses on the Internet in universities or colleges all over the world. However, the courses opened online can support the massive peoples to learn online, but couldn't support them to program on the network, and judge the program on the network. In order to support more and more students to complete the experiments of the online courses, automatic judging system about software experiments and hardware experiments are needed to develop to ensure the correctness of the design of experiments. The Background Evaluation System is an online environment, it can connect different experiment systems to finish different courses. It also can simulate the hardware experiments online and test hardware experiments automatically. Online judge system, can solve much of the problems.