Abstract:  Past studies regarding agricultural total factor productivity measurement mostly focused on traditional inputs， and rarely took environmental factors into consideration. Therefore， it is unable to reflect the real growth performance of agriculture. Using the MalmquistLuenberger productivity index method， the present paper analysed the growth and decomposition of agricultural total factor productivity in Henan Province from 2000 to 2012 under carbon emissions constraint. It was shown that the agricultural total factor productivity in Henan Province increased consistently under carbon emissions constraint， but the increase rate exhibited great volatility. The increase was mainly driven by the advances of agricultural technologies. The growth of agricultural total factor productivity showed significant differences among 18 cities in Henan Province. In general， it was the highest in the North Henan.

Key words: carbon emissions, agricultural total factor productivity, MalmquistLuenberger productivity index