Abstract: Based on the grey system theory and expert-base, the production and consumption of energy sources in China are forecast There fore, according to pressent tendency', the contradiction is pelting sharper and sharper from now on to 2050 year. And then in order to mitigate the contradiction, a proposal is made that the scheme of high energy-saving be used for the development of China's energy system. This is demonstrated with the Fuzzy Graphic Theory.