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in recent years, with the development of social economy, the mankind impact environment on unprecedented scale and intensity, leading to the fact that the environment is worsening constantly, so ecological environment and ecosystem health problem nowadays become important issues that the whole mankind faces and needs to solve urgently together. Ecosystem healthy is a new research field that is not a complete theoretical system yet, through evaluation research on which could know the health status of regional ecosystem, discern the ecological environment problem, offer basis for making the scientific ecological protection countermeasure, and have important guidance functions in improving the level of managing sustainable and environmental management.The article regards the great system making up of environment - economy - society as the research object, applies system thought on appraising research to the ecosystem health. Based on the ecosystem health research theory, establishing the ecosystem health pressure - state - respond (P-S-R) conceptual models, confirming the ecosystem health evaluation index system by the conceptual model, setting up the ecosystem health assessment models, applying RS and GIS technology and statistics analytic approach, forming the procedure,systematized ecosystem healthy assessment technological method system, taking Gaoping city as an example, verification researching to technological method system.. Main research results:(1) According to the pressure - state - respond (P-S-R) conceptual model, considering from the pressure, state, respond three aspects whose influence factor, screening and confirming the characteristic factor with representativeness, containing, independence and so on, constructing the ecosystem health evaluation index system. This index system includes 12 individual indexes of three levels: population disturbance, population density, land reclamation rate, 25°slope soil area index, NDVI mean value index, diversified index,, degree of uniformity index, degree of dominance index, ecology softy degree index, forest cover rate index, soil erosion intensity index and per capita GDP.(2) Seeing that the ecosystem healthy assessment does not have a unified division standard yet at present, the article divides the ecosystem health into five grade with method of comparing relatively, first fine, two better, three moderate, four worse , five extremely bad, to define which in grade from the ecological function of ecological structure, ambient pressure, ecosystem and ecological stability.(3)Basing on index system and according to the index system characteristic formed, setting up respectively every individual factor appraise models, the pressure, state, responded the weighting model and comprehensive weighting model of ecosystem health which the three combine, confirming respectively the pressure, state, respond the overall target weight and single index weight by analytic hierarchy process and principal component analysis. (4) Employ statistics technology and GIS technology to deal with number value and data and analyze them; Regard villages and towns as evaluation units, utilizing GIS technology to and calculate the single factor with the high-efficient, swift, accurate weighting superpose, and realizing the visualization of assessment result as well as ecosystem health space distribution express.(5) Taking Gaoping as an example, with GIS technology to the model and method established going on verifying research. Contrasting the result of pressure, state, respond and ecosystem healthy comprehensive appraisal with reality, whose result basically conforms with the actual conditions, has proved the exactness of model and the maneuverability of the technological method of model realized. The assessment result could also offer technical support for Gaoping’s ecological construction and ecological environmental management and offer scientific basis to the protection and rational utilization of Gaoping’s resource.
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