The low-carbon development of agriculture is of great significance for promoting high-quality agricultural development and ecological civilization construction.Based on the measured data of agricultural carbon emissions and carbon sinks from 30 provinces （cities and districts） in mainland China from 2003 to 2020，this study employs a spatial Durbin model to analyze the direct impact of agricultural socialized services on the growth of agricultural carbon total factor productivity and its spatial spillover effects.It was found that from 2003 to 2020，the average annual growth rate of agricultural carbon total factor productivity in China was 2.3%，with a contribution rate of 2.27% from advancement in frontier technology.Moreover，under both spatial adjacency matrix and geographic distance matrix，agricultural socialized services have a significant positive direct impact effect on the growth of agricultural carbon total factor productivity，as well as positive spatial spillover effect.Specifically，the direct impact is evident in the eastern and northeastern regions，as well as in major grain production and sales areas，while the spatial spillover effect is manifested in the western region，as well as the major grain sales and balance area.Accordingly，it is recommended to further strengthen the construction of agricultural socialized service system in China，promote cooperation and information sharing among regions and provinces，and at the same time formulate differentiated strategies for the development of agricultural socialized services，taking into account the regional characteristics and the actual needs of agricultural development.