With the rapid development of the world economy and population,global warming and air pollution are becoming more and more serious. Thus,the development of low carbon economy and green credit has gradually become the consensus of the world. The adjustment of industrial structure and consumption patterns' change in the wake of the development of low carbon economy make carbon finance become the focus of a new round of competition. Commercial banks,as the valve of credit and loan and the pivot of resource allocation,actively participate in carbon finance related business,and they play a vital role in supporting the development of the national low carbon economy and China's competitive power in global carbon finance. Although carbon finance market has a good prospect in China,commercial banks in this business are still facing a huge challenge. Therefore,China's commercial banks need to establish specialized organizations and to strengthen the training and reservation of related personnel in order to promote their professional capability in carbon finance. They also need to change the model of carbon finance service to meet the market demand. At the same time,they should take effective measures to control the carbon finance business risk.