近年來極端氣候頻生，牽動全球糧食供需、能源資源安全、經濟社會發展，致因應氣候變遷問題逐漸成為國際社會共識，而美、中主要耗能及排放國家在氣候問題上的立場與作為，便成為各方矚目焦點。歐巴馬總統上任後，氣候變遷成為其核心政策之一，企圖掌握未來「綠色經濟」主導地位；中共則試圖營造國際氣候談判之均衡態勢，以迴避減排責任、爭取先進國家技術。美、中雖均有意願拓展氣候領域合作，但因互信不足而在技術轉移、責任分擔上仍存窒礙；隨著今年底哥本哈根會議將屆，美、中等要角之氣候博弈將漸趨白熱化。

The extreme climate influence on grain supply and demand, the energy security, the economic development, cooperate in accordance to the climatic change become major concerns for the international society. The US and China in the climatic change context, become the international focal point. After president Obama takes office, climatic change becomes its core policy, attempting to grasp the “green economy” dominant position; China attempts to avoid the responsibility, strives for the vanguard technology.Although the US and China develop the climatic change issue positively for cooperation, the bilateral confidence is insufficient. The problem lies in technology transfer and responsibility share. As the Copenhagen Conference draws near, the Confrontation between the US and China will become heated.