Dynamic evaluation of ecological frangibility is not only important to understand, preserve, and improve ecological environment, but also essential to promote the harmony between man and nature. The characteristics of ecological environment frangibility in Jiangxi Province are analyzed. It is necessary to combine potential frangibility, intimidate frangibility, and realism frangibility together for the dynamic evaluation of ecological frangibility. The method and step of dynamic evaluation of ecological frangibility in Jiangxi Province are then presented. The analysis indicates that the eco-environmental frangibility in the province tends to relaxation. By comparing 1985 with 2000, the dynamic change of ecological frangibility is from high frangibility to low f rangibility and the total area is 102820.49 km², which accounts to about 61.61% of the total area of Jiangxi Province. At the same time, the evolution process and developing trend of ecological frangibility are analyzed and the division of ecological frangibility and the management of the fragile ecological environment are discussed.