为对河北省水资源保障度进行客观、有效的评价，确保水资源自然循环系统在不受人们破坏或者威胁的情 况下能满足国家或区域各方面发展需求的自然保障作用，基于驱动力-压力-状态-影响-响应（driving-pressure-state- impact-response，DPSIR）模型初步构建水资源保障度评价体系，通过收集河北省相关数据，对初选评价指标相关性 分析和筛选，确定水资源保障度评价体系，引入变异系数法和秩和比法组合赋权的 TOPSIS（technique?for?order preference?by?similarity?to?an?ideal?solution）模型，对河北省 2001—2020 年的水资源保障度状况开展综合评价，并对 评价结果进行障碍因子诊断。结果表明：河北省在 2001—2020 年水资源保障度的相对贴近度从 0.217 增加到 0.745，呈现波动式增长趋势，水资源保障度整体趋向于较高状态，这说明河北省水资源保障度状况正在逐步改善， 与响应子系统中的跨流域供水占比提高密切相关；大部分年份主要障碍因子为跨流域供水占比、工业废水化学需 氧量、人均 GDP、生活废水化学需氧量和万元 GDP 用水量等 5 个指标。DPSIR-博弈论组合赋权 TOPSIS 模型对 水资源保障度演进评价具有较好的客观性和适用性，对该地区经济社会和生态环境的发展具有重要意义。

Hebei Province is an important ecological barrier in northern China and an important support for the coordinated development of Beijing, Tianjin and Hebei. However, its water resources problem was prominent, the per capita possession was low, the spatial and temporal distribution was uneven, and the contradiction between supply and demand of water resources was increasing. With the continuous development of social economy, the intensity and pressure of water resources development and utilization were increasing year by year, and the problem of water ecological environment was becoming more and more serious. In order to objectively and effectively evaluate the water resources security degree of Hebei Province, ensure that the natural circulation system of water resources can meet the natural guarantee function of national or regional development needs without being destroyed or threatened by people.

Based on the DPSIR model, the evaluation system of water resources security degree was preliminarily constructed. By collecting relevant data of Hebei Province, the correlation analysis and screening of the primary evaluation indexes were carried out to determine the evaluation system of water resources security degree. The TOPSIS model combined with the variation coefficient method and the rank sum ratio method was introduced to comprehensively evaluate the water resources security degree of Hebei Province from 2001 to 2020, and the evaluation results were diagnosed with obstacle factors.The results showed that the relative closeness of water resources security degree in Hebei Province increased from 0.217 to 0.745 from 2001 to 2020, from extremely low to high, and reached a medium level as a whole. From 2001 to 2007, the level of water resources security degree was grade V. From 2008 to 2010, the level of water resources security degree reached grade IV.From 2011 to 2012, the level of water resources security reached grade III.From the end of 2014, the progress has been increasing year by year, which was closely related to the increase of the proportion of cross-basin water supply in the response subsystem. From the weight calculation results, it was concluded that the response subsystem was the main subsystem affecting the water resources security degree of Hebei Province, and the obstacle degree of the proportion index of inter-basin water supply was the highest, indicating that the proportion of inter-basin water supply was the primary obstacle factor affecting the water resources security degree.In order to further improve the situation of water resources security degree in Hebei Province, it was necessary to optimize the allocation of water resources and alleviate the pressure of water resources. The biological treatment and physical and chemical treatment technology, are adopted, the process flow, is optimize the economic structure and industrial structure, are adjusted, and improve labor productivity is improved ; it was necessary to advocate residents to improve their lifestyles and reduce the use of cleaners and detergents containing chemical substances. At the same time, it was necessary to improve the efficiency of water resources utilization and promote the circular economy model. The DPSIR-game theory combined weighting TOPSIS model had good objectivity and applicability for the evaluation of water resources security evolution, and was of great significance to the development of economy, society and ecological environment in the region. The research results provided a reference for the rational development, utilization and management of water resources in Hebei Province in the future.