Drought is a meteorological disaster that has a large impact on farmland productivity and is manifesting itself more in the form of flash droughts. Taking the Chengdu-Chongqing Region, the sensitivity of farmland productivity to flash droughts in the Chengdu-Chongqing Region is analyzed in 2006 and 2010, when drought was more severe, based on the travel theory and vegetation sensitivity index using soil moisture, total primary productivity and crop type data from 2000 to 2020, and determined the parameters of flash droughts characteristics that had the greatest impact on farmland productivity by combining with the geographically weighted regression model. The results showed that: 1) the duration and interval of flash droughts in Chengdu-Chongqing Region in 2010 were longer than that in 2006, and the intensity and severity of flash droughts were higher than that in 2006, but the difference in the number of flash droughts was small. 2) The sensitivity of farmland productivity to flash droughts in Chengdu-Chongqing Region in 2006 was generally more homogeneous, and the spatial variability was small; and in 2010, the productivity of the region showed a clear “uniform” pattern, with the same spatial variability as that in the same region. In 2010, the sensitivity of farmland productivity to flash droughts in the region showed a clear pattern of “high in the west and low in the east”; the productivity of farmland in Deyang City and Mianyang City was higher than that of other regions in the region. 3) The productivity of rice-type and other crop-type farmland in Chengdu-Chongqing region was relatively high in relation to the sensitivity to flash droughts. 4) The duration of flash droughts and the intensity of flash droughts were the main factors affecting farmland productivity in Chengdu-Chongqing Region. 5) the productivity of three-season rice was generally more uniform, with less spatial variability. 〖BP)〗5) Productivity sensitivity to flash droughts was significantly higher in three-season rice fields than in single- and two-season rice fields, and productivity sensitivity to flash droughts was significantly lower in irrigated fields than in rainfed fields. The results can provide a scientific basis for the prevention and control of flash droughts in Chengdu-Chongqing Region and for the adjustment of agricultural structure.