Agricultural damages which are probably caused by climate change have already been observed in Bangladesh. In such a worrying situation, projections of possible future food situations are necessary. This paper develops a rice supply-demand model of Bangladesh, and compares the magnitude of possible climate change impacts on future food situations. One simulation result shows that from the point of view of national food security, high temperature impacts on production are much more serious than other impacts. Therefore, research and development strategies designed to address long-term national food security should place priority on high temperature impacts in rice production. JEL Classification: Q11, Q18, Q51, Q54