Since March 2019, Fujian Province has affected by continuous precipitation. The rainfall of 309 townships in 55 counties (cities and districts) in Fujian Province has exceeded 50mm, and that of 102 townships in 25 counties (cities and districts) has exceeded 100mm. This precipitation process has the characteristics of long time, wide range, concentrated precipitation and short-term strong convective weather, which is very likely to cause secondary disasters such as flooding in small and medium-sized watersheds, flash floods, urban and rural flooding and landslides.