Based on the questionnaire survey of 1063 farmers in main rice production areas，this paper studies the impact of climate change on farmers’ use of pesticides and chemical fertilizers both subjectively and objectively. “perception of climate change” is used as the measurable indicator of the influence of climate change on farmers. The result shows that the core variable “perception of climate change” of farmers has a significant effect on the use of pesticides and fertilizers. it is found that farmers who are more aware of the climate change will increase the amount of pesticides and fertilizers in order to mitigate the potential loss. In addition，risk attitudes，whether to participate in agricultural industrialization organization also greatly affect farmers’ pesticides and fertilizers behaviors. Based on the above findings，this paper put forward some corresponding countermeasures and suggestions.