【Objective】The impact of climate change on grain productivity growth was studied in order to provide a theoretical basis for the formulation of scientific grain production policies.【Method】Using the China inter-provincial panel data from 2000 to 2017,sequence DEA method was used to calculate whether to consider the climatic factors of the grain total factor productivity based on using HP filtering separation grain yield climate production,and the influence mechanism of climate change,technology investment and other factors on grain productivity was empirically tested.【Result 】Climate change had great impact on the measurement of grain total factor productivity. After considering the factors of climate change,the grain total factor productivity was lower. Under the two conditions,the growth of total grain productivity showed obvious volatility,which was mainly driven by technological progress,while technical efficiency was hindering the effect. The climate changes had significant effects on the grain total factor productivity,and had clear regional differences. The annual average temperature had positive impact,while the annual total precipitation showed negative effect. The contribution of technology investment to the growth of grain total factor productivity was very significant. 【Suggestion】The government should adjust the agricultural structure and planting system,promote the reform of agricultural supply side;increase the investment of agricultural science and technology,cultivate new varieties;improve the construction of farmland infrastructure,improve the utilization rate of water resources;establish and improve the early warning service system of agro meteorological disaster monitoring,and improve the prediction ability of agricultural disastrous weather.