In order to adapt to future climate change to the public, provide a basis for targeted adjustment of agricultural production, based on questionnaire surveying, the author analyzed perceptional differences of the public in Hainan Prefecture, Qinghai Province, on the changes of climates and crop- sowing periods. The results showed that: these changes were so evident that the public could perceive and recall them clearly. Most people agreed that the local climates had changed, especially since the year 2000, and the crop-sowing periods were advanced significantly.