The benefit evaluation of ecological restoration of abandoned mines is an important basis for mine comprehensive management and government decision-making,and also an effective means to promote the construction of ecological civilization.The construction of index system is the basis of benefit evaluation,and the selection of evaluation index is the key of this study.Analyzes the characteristics of ecological restoration of abandoned mines,and combs the benefit evaluation of ecological restoration of abandoned mines based on ecosystem service value evaluation and ecological,economic and social benefit evaluation.Expounds the principles of constructing the evaluation index system of ecological restoration benefits of abandoned mines.Combined with the regional ecological and socio-economic characteristics of the important water conservation areas in the northern part of Beijing-Tianjin-Hebei,three major benefit categories of ecology,economy and society are designed.The evaluation of ecosystem service value is integrated into the comprehensive benefit evaluation,and the evaluation indexes are selected by classification.The evaluation index system of ecological restoration benefits of abandoned mines in the important water conservation areas in the northern part of Beijing-Tianjin-Hebei is constructed.It focuses on exploring economic and social benefits indicators,strengthening corporate profitability,ecological compensation,demonstration guidance,landscape aesthetics and other indicators.The construction of the index system provides a reference for the benefit evaluation of the ecological restoration project of abandoned mines in the important area of water conservation in the north of Beijing-Tianjin-Hebei.