Due to the random nature of precipitation events,the accumulated precipitation within the first (final) 1-5 days of a given month is likely to exceed 50% or more of the total precipitation in that month.Using the daily rainfall data from more than 2 400 stations in China from the period of 1961 to 2017,the statistical analyses in this paper show that such events occur with significant features in both the seasonal and spatial distribution:1)The cumulative precipitation in the first 1-5 days can influence the monthly precipitation during the fall and winter,and the cumulative precipitation in the final several days can influence the monthly precipitation during the period of January to April.2) The number of stations significantly affected by accumulated precipitation of the first several days has a maximum value in some years and months.The number of stations significantly affected by such event reaches about 30-50% of the total number,which corresponds to a large-space extreme heavy precipitation event.3) The stations significantly affected by such events show features of spatial concentration in September.For example,the stations affected by the first 5 days of September are mainly concentrated around Shandong and Hebei Provinces,and such events in those regions have occurred about 20 times during the past 57 years.