Based on denselyobserved surface and radar data and NCEP FNL data as well as the best track data from Shanghai Typhoon Institute/CMA, this article examines the structure and evolution of the rainbands of Typhoon Rumbia that caused torrential rain in East China after Rumbia moved far into inland. The results show that the rainbands twice manifested evolutions from multiple short rainbands into a single long rainband respectively around the boundaries between Shandong, Henan and Anhui provinces as well as midsouthern Shandong Province. The maintenance and evolution of the rainbands were determined mainly by the sustaining of typhoon circulation and intensity and its interaction with the stagnation and westward extension of subtropical high. Because of the intensification of lowlevel vertical wind shear, the rainbands displayed apparent convective features with embedded tornadoes in northern Anhui and south Shandong.