Nowadays, all governments of countries attach great importance to the e-government, and e-government has been the core projects in the construction of information superhighway. But, there is no a recognized evaluation system for E-Government System evaluation, which makes E-government functions and values decline. In this paper, we use AHP method to determine the weight of evaluation index systems and use gray correlation analysis to evaluate the e-government information systems, this qualitative and quantitative analysis methods are more scientific and objective for e-government information systems evaluation. At last, according to the numerical example, science and rationality of the methods are given.