Abstract: Based on the annual climatic and agricultural production data from 1961 to 2009 in wetlands of Hongze Lake， the influence and countermeasure of climate changes on agricultural production in this area were analyzed. The results showed that the annual mean temperature increased， especially the temperature in recent 25 years increased obviously， the annual precipitation increased slowly， and the annual sunshine hours decreased in recent 49 years. In recent 10 years， the extreme weather events happened frequently， meanwhile， the extreme high\|temperature and extreme low\|temperature occurred alternately in different years， as well as the drought and flood years， and the annual precipitation increased gradually， on the contrary， sunshine hours and relative humidity greatly reduced annually， leading to much harmful influence on agricultural production. Thus， the corresponding countermeasures were proposed such as enhancing the ability of disaster prevention and mitigation， adjusting the distribution and structure of agriculture， reforming the cropping system， developing the ecological agriculture， breeding and popularizing new crop varieties adapt to climate change.

Key words: wetlands of Hongze Lake, climate changes, agricultural production, countermeasure