One of the factors,impacting the ice flood disaster of the Inner-Mongolia reach,is the sand riv-erbed changes. According to the observed data,this research statistically analyzed the sediment transportcharacteristics of the Inner-Mongolia reach in the ice flood season,and explained the mechanism of generat-ing the characteristics,and then on these bases the rule of riverbed scour and deposition and the riverbedchange were studied. The results show that during the ice flood season the flow in the Inner-Mongo...