According to the classification system and methods in“Ramsar Convention”，“Investigation 0utline of Wetlands in China”and other classification systems

the wetlands in Yellow river deltais classified by three times

and their distribution

areas and major character；are outlined respectively. The complexity and diversity of wetland types and eco-environment in Yellow river delta created rich wetland resources

including biological resources

land resources

shell sand resources and sea resources. However

owing to man's unreasonable utilization

eco-environment in Yellow river delta are getting worse gradually，some wetland resources are degenerating or even lost

so it is imperative that wetlands are conserved and utilized reasonably. The countermeasures of sustainable utilization of wetland resources in Yellow river delta are put forward.