Abstract: Low-carbon economy is a new developing economic thinking that responds to global climate change. In this paper, energy saving and emission reduction in agriculture is presented as an important low-carbon agriculture development method. This is mainly achieved through circular agriculture development. The ways of circular agriculture development in China includes enhancement of cropland carbon pools and cropland input reduction via developing circular production patterns. It is also an important way to develop combined circular pattern of cropping and pasture for reducing pollution from wastes and improving the competitive strength of pasture. Extending production chains in croplands and increasing farmer income via improving circular chains of edible fungi also make it viable. Meantime, a well developed circular agriculture increases biodiversity, improves the use efficiency of natural resources, enhances engineered energy saving and emission reduction. Developing circular industrial patterns and agricultural enterprises is another important way.