Typhoon Lekima (1909) is the third strongest typhoon among those that make landfall in Zhejiang from 1949 to 2019. It affects most provinces in central and eastern China with high intensity and significant extremity of rainstorms, causing serious disaster losses. The typhoon-induced precipitation mainly affects Zhejiang and Shandong, corresponding to the two major precipitation stages. To understand this process more comprehensively, this paper reviews and summarizes the common and different reasons between the two precipitation stages in terms of large-scale weather situation, the intensity of Lekima, dynamic and thermal factors, cloud microphysics, transport of water vapor and energy, and topography. The stable circulation with good configuration, sufficient water vapor and energy, as well as the effect of binary typhoons are favorable factors throughout the whole process. The high intensity of Lekima, the amplification of topography, good dynamic and thermal conditions and beneficial effects of cloud microphysical process are the characteristic causes of the first precipitation stage in Zhejiang, while the special causes of the second precipitation stage in Shandong are the invasion of cold air from the westerly trough and the prolonged effects of the typhoon. In addition, the directions for further research on the extreme precipitation induced by Lekima are discussed.