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The characteristics of Radar echoes during the heavy rainfall event from 9 to 16 July 2010 along the Yangtze River in Anhui are analyzed on the basis of conventional meteorological data and Doppler radar data of Hefe Station. It is concluded that the favorable larger scale circulation，ample water vapor, and stronger ascending movement are the advantageous weather background for the severe rainfall. The results show that the source regions of heavy rainfall along the Yangze River in Anhui are often in the Dabie Mountains. The formation and development of radar echoes during heavy rains are always related with the local strong convergence in wind field (adverse wind regions). Heavy rainfall events are prone to happen when rainbelts are combined along the low level shear line and then strengthened, and when single echoes move in the same direction with the larger scale rainbelt area slowly or quasi stationarily.