Abstract:Abstract: 【Objective】 This study aims to investigate the characteristics of autumn continuous rain in Bijie City, which is of guiding significance for the agricultural arrangements of autumn harvest and sowing in the region. 【Method】 Utilizing daily precipitation and sunshine data from September to November between 1960 and 2022, collected from eight national meteorological observation stations in Bijie City, the study employs linear trend and wavelet analysis methods to statistically analyze the spatial-temporal variation characteristics of autumn continuous rain under no-sunshine conditions in Bijie City. 【Result】 From 1960 to 2022, both the autumn precipitation and sunshine hours in Bijie City showed a decreasing trend. The precipitation under no-sunshine conditions exhibited periodic changes over time with cycles of 5, 9, 17, and 30 years, with the primary cycle being 17 years. The eastern part of Bijie City was more affected by autumn continuous rain compared to the western part, with the overall frequency of autumn continuous rain showing a fluctuating downward trend in the time series. This is beneficial for agricultural production. Furthermore, the occurrence of autumn continuous rain is concentrated in October, and completing the autumn harvest and drying work before mid-September can effectively avoid the impact of autumn continuous rain. 【Conclusion】 Over the past 63 years, the frequencies of light, moderate, heavy, and very heavy autumn continuous rains were 44.1%, 34.2%, 18.5%, and 3.2% respectively, with light autumn continuous rain exhibiting change cycles of 6, 20, and 32 years; moderate autumn continuous rain showing cycles of 5, 8, 17, and 28 years; heavy autumn continuous rain having cycles of 7, 18, and 35 years; and very heavy autumn continuous rain displaying cycles of 13, 21, and 41 years. The spatial distribution of different levels of autumn continuous rain generally shows a pattern of more in the east and less in the west.