Due to greenhouse gas emission,human beings have suffered a lot,so low-carbon development becomes a necessity. The concept of “low-carbon development ” is comprehensive,including the follow ing aspects: low-carbon economy,low-carbon lifestyle,low-carbon city and low-carbon society. Low-carbon development itself is a moral development which has rich moral connotation. Firstly,low-carbon development reflects being thrifty; secondly,with low- carbon development,the moral subject bears moral responsibility consciously; thirdly,low-carbon development is the sublimation of the relation between human beings and nature. Low-carbon development has already had achievements and rich resources to mirror. As a result,low-carbon development shall be advocated so that life will be better. Due to greenhouse gas emission, human beings have suffered a lot, so low-carbon development becomes a necessity. The concept of “low-carbon development” is comprehensive, including the follow ing aspects: low-carbon economy, low-carbon lifestyle, low-carbon city and low-carbon society. Low-carbon development itself has rich moral connotation. Firstly, low-carbon development reflects being thrifty; secondly, with low- carbon development, the moral subject bears moral responsibility consciously; thirdly, low-carbon development is the sublimation of the relation between human beings and nature. Low-carbon development has already had achievements and rich resources to mirror. As a result, low-carbon development shall be advocated so that life will be better.