limate change affects crop production in two ways: changes in GDP and population and changes in climate variables, especially temperature and precipitation. This study aims to investigate preliminary effects of climate change impacts on Thailand’s rice production, consumption, and export capacity by integrated EPIC model and the world and Thai rice market models. Therefore, the Biophysical process model (EPIC model) and Economic processes model are employed as the research methodology of this study. Main findings of the comparison showed both rice production and export in the base year (2007) are likely to expand until 2027, and there will bea sufficient amount of rice surplus for export, which is nearly the same level as that of domestic consumption in A2 scenario. In 2017, the amount of rice production will be only slightly higher than the domestic demand, leaving a small rice surplus of up to 2 million tons for export, compared to 14 million tons in 2016.