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Smart government affairs are important for smart city construction, and parallel connection examination and approbation mechanism (PCEAM) is the fundamental work in the construction of smart government.To solve the problems of information island, its necessary for all the departments and organizations sharing their own resources and cooperating with each other in the process of dealing with government affairs.After analyzing the current situation of government system, this paper sorts out the influencing factors in information sharing and examines the contribution of metadata in solving the problems of PCEAM from different perspectives.Then, based on metadatas government information sharing model, we develop PCEAM for smart government.Finally, three levels of networks named intranet, outer net and Internet are considered to be study boundary.We develop the design and scheme of PCEAM by considering information security of system network and realization of items associated based on expert system.