洪水灾情评价涉及人、自然、环境、社会及经济等多种因素,是典型的多指标评价问题,需对多因素进行综合评估。提出了一种洪水灾害损失的可变模糊评价方法,该方法集理论的严谨性与操作的简捷性于一体,适于处理评价标准为区间的问题,是传统模糊评判方法的延伸。实例应用结果表明,洪水灾害损失可变模糊评价方法评价结果的可信度高,能够很好地对各种洪水灾情进行有效的评估,是一种处理多因素复杂洪水灾害评价问题的新方法。 Flood disaster assessment involves many factors, such as human, nature, environment, society and economy. It is a typical multi-index evaluation problem, and a comprehensive assessment of multi-factors is needed. This paper presents a variable fuzzy evaluation method for flood disaster losses. This method integrates the rigor of the theory and the simplicity of the operation, and is suitable for dealing with the problems that the evaluation criteria are intervals. It is an extension of the traditional fuzzy evaluation method. The results of practical application show that the fuzzy evaluation method of flood disaster loss has high credibility and can effectively evaluate various flood disasters. It is a new method to deal with the multi-factor complex flood disaster evaluation.