[Objective] The spatiotemporal differentiation of agricultural carbon emissions in Beijing-Tianjin-Hebei region was analyzed, and the optimal path of carbon emission reduction was explored in order to provide a decision-making reference for low-carbon agricultural development. [Methods] Agricultural carbon emissions were calculated based on the IPCC guidelines. Trend analysis was used to determine the linear changes in agricultural carbon emissions in Beijing-Tianjin-Hebei region. ArcGIS breakpoint analysis and the kernel density method were used to analyze the spatial evolution trends of the six major agricultural regions in Beijing-Tianjin-Hebei region. [Results] Overall carbon emissions and carbon intensity of agriculture in the Beijing-Tianjin-Hebei region showed a downward trend over time, especially carbon emission intensity that had been rapidly decreased since 2005. Although the proportion of total agricultural carbon emissions was small in this region, the carbon emission intensity was higher than the national level, with the highest carbon emission levels in the Bashang agricultural zone and the Jinan agricultural zone. From a spatial perspective, the northern part of the Bashang agricultural area, far from Beijing and Tianjin, as well as some counties in the central plains and Southern Hebei agricultural areas, had higher carbon emission intensity. However, the suburban agricultural area of Beijing and Tianjin, as well as the southern part of the adjacent Bashang agricultural area, maintained a light and low emission status. In addition, according to the results of nuclear density analysis, the overall carbon emission intensity of the six major agricultural regions was decreasing, with a greater degree of internal differentiation in carbon emission intensity between the Beijing-Tianjin suburban agricultural region and the Hebei central plain agricultural region. [Conclusion] The six major agricultural regions in Beijing-Tianjin-Hebei region should be engaged in regional cooperation with regard to carbon reduction and sink enhancement based on agricultural positioning and resource endowments. In the future, further consideration should be given to cross industry agricultural carbon reduction cooperation.