Abstract: The paper aims to study the change laws of crop climate production potential in western Guanzhong of Shaanxi under the background of climate change. The authors chose the temperature and precipitation of 11 meteorological stations in Baoji from 1961 to 2010, used Tuynthwhite Memoral model to calculate and analyze the situation of crop climate productivity and its change trend in Baoji. The results showed that: climate productivity potential showed a decreasing trend in western Guanzhong; the annual and seasonal average temperature showed a significant upward trend and the precipitation showed a decreasing trend; climate warming and drying made crop climate productive potential decline in volatility with 35.69 kg/(hm²·10 a), the precipitation was the main limiting factor; the use ratio of climate production potential was 34.8% on average, so crop production had a big development potential. Under future climate scenarios, warm and humid climate will be most favorable for crop production, the average yield increase range will be 8.5%-22.5%, while cold and dry climate will be the most negative for crop production, the average yield decrease range will be 5.7%-20.8%.