In recent years, the Jiangbei central area in Fuzhou suffered from a wide range of the waterlogging disasters repeatedly. The causes of the waterlogging disasters were analyzed in terms of the urbanization, climate change, water storage and drainage facilities, management system and so on, and the waterlogging quantity of the area under the different design rainstorm criteria was achieved by the model calculations. According to the unique Fuzhou topography and drainage system construction progress,the measures for improving the drainage network and the river,including dredging,building,bypassing,expanding and preventing" were proposed. The final drainage improvement ideas of dredging and by-passing" was determine by the scheme comparison.