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Abstract: The efficiency problem of greenhouse effect on future agroclimatic resources is important for every person,because the change of agroclimatic resources have been effected agricultural production directly.In this paper,the output data from American Oregon University model was used to analyse the possible change of Chinese agroclimatic resources when atmospheric carbon dioxide content is doub- ling.The results showed:Accumulated tempera ture and sustained days will in- crease;Frost-free periods will extend;Yearly precipitation will increase and incr- ease scale decrease from the Southeast to the Northwest gradually;Soil humidity appears decreasing trend in the North and increasing in the south of the Yan- gtze River;The change of monthly evaporation rate is great in summer than in Winter and in the North than in the South.

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