Abstract: Promoting the green and low-carbon transformation of agriculture is the main starting point to realize the goal of "double carbon" in the agricultural field,and it has always been an important orientation of China's agricultural policy goal under the background of a large country and small farmer household.The development of agricultural production trusteeship,a new mode of agricultural production,is conducive to the realization of agricultural green and low-carbon transformation.It can promote small farmer household's green and low-carbon production through demonstration effect (driving small farmer household's green and low-carbon production mode),scale effect (reducing the average cost of green and low-carbon production),spillover effect (introducing green and low-carbon technology into agricultural production),and feedback effect (service organizations actively respond to national policies).At present,there are still some problems in practice,such as the rising cost of trusteeship,scattered links,lag of publicity,lack of trust and so on,which restrict the green and low-carbon effect of agricultural production trusteeship.It is necessary to optimize agricultural production trusteeship policy from the aspects of increasing subsidies,improving service mechanism,attaching importance to policy publicity,strengthening information services and so on,so as to accelerate the green and low-carbon transformation of agriculture and the organic connection between small farmer households and modern agriculture.

Key words: agriculture, agricultural production trusteeship, green agriculture, low-carbon agriculture, greenand low-carbon transformation, green development, Hunan Province