Typhoon Doksuri (2305) is the second strongest typhoon to land in Fujian Province from 1949 to September 2023, causing extreme heavy precipitation in Fujian Province. In this paper, the main characteristics of the extreme precipitation in Fujian Province were analyzed, using multi-source data such as dual polarization radar and automatic meteorological stations. It is found that two obvious precipitation stages were caused by typhoon’s eyewall, inner spiral rain band, and outer spiral rain band respectively. Meso β-scale convective cloud in typhoon Doksuri’s eye wall is mainly characterized by large raindrops after landing. The convective cloud splits into the inner spiral rain band and organized into a linear convective system, with large raindrops and higher density causing extreme rainfall intensity. After typhoon Doksuri moves out of Fujian Province, the mesoscale convective system along the outer spiral rain band continuously affect the coastal areas of Fujian Province through the train effect and causing extreme precipitation. High density of small raindrops are the main cloud microphysical characteristics. The precipitation spatial distribution is closely related to topography such as Jiufeng Mountain and Daiyun Mountain. The trumpet shaped topography of the sea-land interface contributed to forming the extreme precipitation center.