Abstract: Based on the daily precipitation data of Huixian from 1965 to 2015, long-term trends of precipitation amount and day of precipitation with different intensities over years and seasons were analyzed by using linear tendency estimation and Mann-Kendall methods. Their abrupt change characteristics were also tested. The results showed that the average annual precipitation in Huixian was 577.8 mm and the average number of annual precipitation days was 73.6. Both showed a decreasing trend at rates of 1.3 mm/10a and 0.7 d/10a, respectively. In each season, the proportion of summer precipitation and precipitation days were the largest and those in winter were the smallest. While precipitation amount and precipitation days showed a decreasing trend for summer, those showed an increasing trend for winter. For spring and autumn, precipitation amount showed an increasing trend and precipitation days showed a decreasing trend over year. Among the different precipitation intensities, the proportion of moderate rain accounted for the largest, followed by heavy rain and light rain, where little difference existed. The proportion of light rain days was the largest, but it showed a significant decrease trend. The amount of moderate rain and its precipitation days showed an increasing trend, while the precipitation amount and precipitation days of other intensities showed a decreasing trend.