Abstract: Abstract: This paper, using the data from "China Rural Statistical Yearbook" 1984-2003 of National Bureau of Statistics and the observation data of average temperature in the same term, has analyzed the impacts of temperature change、the agricultural input and the sown area changes in different regions of China during the last 20 years. The results show that, the climate change with the main character of getting warmer has obviously promoted the crop production increase in the Northeast of China, but restrain which in the North、Northwest and Southwest of China, and has not obvious effects on it in the East and Central South of China. The increase of agricultural input enhances the production obviously in the various regions in the early stages, but the speed of production increase become slowness in the later period. The sown area change has not obvious effects on the production in the various regions, but the continuous decreased sown area has restrained the production in the East and Central South of China.

Key words: climate change, food crop production, agriculture invesment