Abstract:Digital City Construction is the strategic task of urban development of information technology, and building digital city construction’s assessment system is key to measure the performance of digital city construction. Thus, this article based on the status of research and principle of index system construction, try to build a digital city building performance evaluation system from five dimensions: the city infrastructure, the level of information technology industry, the development of e-government, the level of economic development and urban economic livelihood, and use the theory of intuitionistic fuzzy set to construct performance evaluation mode , then expand the empirical research. The research can help to evaluate digital city construction and development.