We should understand the wetlands in the environment not only large famous but also very small wetlands. Wetlands have been understood the habitat of waterfowls and the treasure house of ecology. But All wetlands must be cognized how to be wetlands and be valuable as environment. There are many small and nonfamous wetlands in our country. They are not understood as wetlands. They are known as leaved estate, so thought as developed economically. Many leaved small nonfamous wetlands supply various good things. Most of all, they are water service and maintain of climate. These are served the source of sustenance of earth environment and ecology. They must get supported and maintained. Therefore The paradigm is shifted on the wetlands.