In order to evaluate environmental and cultural factors, a system of indicators for evaluation the development of ecotourism is constructed for coastal wetlands in this study. First, a preliminary evaluation's framework of four dimensions and twenty three indicators were conducted from relevant literatures. Subsequently, Fuzzy Delphi Method (FDM) was employed to filter out first level to four dimensions, which are environment-ecology, society-culture, economic and management implementation dimension, and second level to eighteen evaluation indicators. In addition, the relative weights between dimensions and indicators were converted by experts' consensus value. The result indicated the environment-ecology and management-implementation both play comparatively important roles in the course of developing ecotourism in coastal wetlands. Regarding indicators' significance, the tops of each dimension are respectively biodiversity, tourists' satisfaction, experience of recreation activities, feedbacks to the communities and tourists' safety.