From a traditional point of view, a country’s diplomatic position and principles are determined by the political environment and military circumstances. The global ecological environment, which has worsened since 1970s, is now paid great attention to by people all over the world. The eco-environmental problem has gradually become one of the most important factors that affect the international relations nowadays. Besides nontraditional diplomacy in culture, trade and security aspects, China is now carving out a new way in nontraditional diplomacy---ecological diplomacy. It greatly impels China to break through the traditional diplomatic thinking and try a new diplomatic strategy.