[Objective] Taking Jiangsu Province as the research object, the ecological carrying capacity during 2001-2005 was evaluated according to its resource endowment and the degree of obstacle was diagnosed in order to provide scientific basis for the promotion of ecological bearing capacity in the area.[Methods] The DPSIR was used to construct and establish index system and then the index weights were assigned by the entropy weight method, the TOPSIS analysis method and obstacle degree model were applied for empirical analysis.[Results] The ecological carrying capacity of Jiangsu Province indicated a "N" shaped trend evolution, and the comprehensive closeness was at the poor stage. From the perspective of classification indicators, the pressure, driving and response subsystem evaluation index experienced different levels of upward trend while the evaluation index of subsystem was a downward trend, station subsystem remains stable. From the diagnostic result of obstacle degree, the response subsystem is one of the main factors that affect the ecological carrying capacity of Jiangsu Province.[Conclusion] The coupling and coordination degree of society, economy and ecology is relatively low in Jiangsu Province. It should put forward increasing investment in environmental finance, improving infrastructure construction, strengthening the construction of ecological civilization system and expanding the space for ecological development, so as to promote the improvement of ecological carrying capacity in Jiangsu Province.