Abstract: Ice run is a kind of nature disaster mainly induced by meteorological factors. The regions along the Yellow River bank in Inner Mongolia are frequently influenced by the disaster and it may result in losses of properties and menace to human safety. The disaster's characters, forming mechanism, occurrence prone period, tendency prediction as well as hazard estimation are studied and analyzed. Based on these analyses, some conclusions are obtained as follow. The ice run is a kind of special natural disasters resulted from both the climatic and geographical factors in specific area; the ice run occurs only in ice river's opening and closing periods which are about one month long respectively in spring and autumn season; with the global warming trend, the ice river opening time is becoming earlier and the closing time is being postponed gradually, so the disaster's hazards will increase; according to both the disaster particularity and its present defending situation, some countermeasures are proposed to be taken such as strengthening the infrastructure project construction, and the disaster forecasting and monitoring system construction as well as paying attention to enhance the public prevention awareness etc.