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This paper constructed the ecosystem comprehensive evaluation index system framework using driver-pressure-state-impacts-response (DPSIR) conceptual model. The comprehensive evaluation index system is formed through the selection, screening and rational analysis of ecological-system indicators. The evaluation model is established using the improved group Gl method to determine the index weight. At the same time, the paper uses empirical analysis to analyze the ecological conditions of 14 typical Chinese provinces. The contributions of this paper come from three aspects. Firstly, the paper constructed index system using DPSIR conceptual framework, and bring human demand, economic development and social progress into the system. Secondly, use the similarity degree of the ratio vectors or similarity degree of the order relation after equivalent formulation to empower the expert's knowledge and experience. Thirdly, through adding natural disaster index into the pressure layer of the index system, the paper described the effect of natural disaster on ecosystem. This improved the existing DPSIR model which only considered the effect of human activity on ecosystem. [ABSTRACT FROM AUTHOR]