The Three-Gorges Hydropower Project on Yangtze River was officially impounded on June 1, 2003. Then, more than two thousand microearthquakes abruptly occurred along the River in Badong County of Hubei Province from June 7, 2003, and attracted great attention. After the completion of the second and third-phase construction of the project, the water level will raise up to 156 m and 175 m, respectively. Could it trigger stronger shock? Seismotectonic analysis of the distribution of several active faults and their intersections and seismogenic capacity in the eastern part of the Three-Gorges Reservoir area suggests that two potential seismic focus zones located in Badong and Xiangxi may be hit by reservoir-induced earthguake of upper-limit magnitude about 5.5, and the seismic intensity in epicentral zone will be Ⅶ°～Ⅷ°. Meanwhile, a large number of landslides will be triggered to move and, hence, heavy geologic hazards will occur.