分蓄洪区分蓄洪运用时，将直接遭受洪灾损失。以湖北省杜家台分蓄洪区为例，采用调查研究与综合分析比较相结合的方法，引进财产损失系数和受灾人口系数，分析了分蓄洪区分洪运用损失的变化特点，结合分蓄洪区运用几率的变化，初步探讨了促进分蓄洪区建设的策略。研究发现：分蓄洪区运用的财产损失和受灾人口都随时间呈现出显著的增长，受灾人口增长速度缓于财产损失。长江干支流分蓄洪区的运用几率降低，直接降低了分蓄洪区运用的洪灾损失几率和洪灾损失程度，提高了分蓄洪区域内防洪等级。通过给予分蓄洪区特殊的政策，加强产业指导，强化防洪设施建设，完善分洪运用补偿机制等,提高分蓄洪区的防洪综合能力，确保分蓄洪运用的顺利实施。

The flood diversion and storage area directly suffers a large inundation loss when undertaking the task of flood diversion. Taking the Dujiatai flood diversion and storage area in Hubei Province as the study case, using a combined method of investigation and comprehensive analysis, this paper analyzes the changing characteristics of flood storage operation loss through introducing property loss coefficient and flood-hit population coefficient, and preliminarily discusses the strategies for promoting flood storage area construction based on the changes in its utilization probability. The results reveal the following points: The property loss and flood-hit population caused by flood area operation both increase significantly with time, and the growth rate of property loss is larger than that of flood-hit population. The reduction of utilization probability of flood storage area in the main stream and tributaries of the Yangtze River, directly reduces the probability and severity of the flood losses caused by flood storage area operation and raises the flood control level in flood storage area. By providing special policies, enhancing guidance, strengthening construction of flood control facilities and completing the compensation mechanism of flood storage area operation, the comprehensive flood control and security capacity can be improved and the smooth operation of flood storage area can be ensured.