In the process of urbanization, the dynamic relationship between Urbanization and economic growth may change over time. This paper is to examine the relationship between electricity consumption and economic growth under urbanization in China during 1980-2009. The gross fixed capital formation and the employment level are incorporated to build a multivariate analysis framework. The main contributions of this paper include: (1) Through Vector Error Correction Model, the short-term fluctuation of economic growth puts it 78.2% down to electrical input, investment and labor input, urbanization and adjustment by itself. (2) Impulse Response and Variance Decomposition techniques are employed to further analyze the internal relationship between electricity consumption and economic growth under urbanization. The research thus recommends that policies towards the expansion of electricity infrastructure should be intensified in China in order to meet the increasing demand exerted by the country's strong economic growth and rapid urbanization.