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Information communication technology (ICT) has penetrated the government sector due to their increased functionality, low cost, high reliability and easy-to-use nature. However, in such E-government applications the privacy and security of the transmitted information must be preserved. Also different civil servant involved in the government must have different access privileges to the government information. Today, with the development of E-government projects, more and more government information is stored in government website, office automation system based on the database technology. Meanwhile, E-government projects are engaging in aggregating numerous types of information by interacting with Web services technology. It is necessary to utilize access control technology to improve E-government security. In this paper, we present a framework of role based access control model on the base of E-government construction situation analysis. The framework will provide helpful advice and information for E-government information security plan.