This study is cond ucted for the purpose of improving the economic development of the coast zone of J iangsu Province.Based on the natu ral characteristics of the study region, the article discusses the characteristics of eco-environmental frangibility, the shortage of the resources such as capital, technology, and man- power, and the issues of polluted eco-environment with the economic development.For the contradictions be- tween economic povert y and eco-environmental frangibilit y, the cycling economic development pattern for the coast zone is expounded.At last, for the coast zone to develop cycling economy, it is suggested that the clean prod uction and eco-agricult ure should be developed in view of the protection of local eco-environment.