If the adult education of the West University of Science and Technology is the adult college entrance examination, the diploma is the West University of Science and Technology, and the learning form is correspondence. The Petroleum University of RTVU and Northwestern Polytechnical University are online education, and the learning form of graduation certificate is online. Both of them are adult higher education diplomas, that is, the seals of institutions and learning forms are different. In terms of use, they are all nationally recognized academic qualifications. Relatively speaking, the recognition of the network is better.