It is of great theoretical and practical significance to clarify the mechanism of carbon emission reduction in animal husbandry promoted by technological progress for low-carbon transformation of animal husbandry and the realization of“Double-carbon” target. Based on the panel data of 31 provinces (cities and autonomous regions) from 2007 to 2020, the present status and characteristics of carbon emissions from animal husbandry in China are estimated and revealed, the panel regression model was used to analyze the impact of technological progress on carbon emission and spatial spillover effect of animal husbandry. The results show that the carbon emission of animal husbandry is decreasing in China, and there is a significant difference among different provinces. The reduction of carbon emissions from technological progress through the improvement of carbon intensity in animal husbandry can curb the increase of carbon emissions from economic growth, but this result has regional heterogeneity, the“Scale effect” of technological progress on the carbon emissions of animal husbandry in the western region is greater than the“Intensity effect”, so it can not achieve both economic development and emission reduction, the marginal effect of technological progress on carbon emission of animal husbandry is enhanced with the increase of industrial agglomeration level. In addition, technological progress has a significant spatial spillover effect on livestock carbon emissions, as demonstrated by the fact that a unit increase in technological progress in the region will reduce livestock carbon emissions by 1.666 percentage points in neighbouring regions.