Heihe River ranks No.2 of inland rivers in China,the river basin is in shortage of water resources with deteriorated ecosystem and frequent water conflicts.This article analysed the ratio between annual runoff and maximum flood water for 30d and 60d at Yingluoxia Hydrology Station in main stream of Heihe River as well as ratio between flood water proportion and average daily water flow and raised some thinking on flood water utilization,which are helpful for getting further understand on flood water resources in Heihe River Basin and speeding up the process of taking flood water as resources.