Fisheries association, fisheries society, and fisheries cooperative, which are established and operated legally, and managed democratically, belong to fisheries intermediary organizations that have similar appearance. Through deep research from three dimensions of nature, function and registration authority, distinct differentiations can be found. Similar appearance leads to certain problems, which reflects critically on the concepts abuse and the dislocation, offside and lack of functions between fisheries society and fisheries cooperative. At the same time, a few of local governments can't master the way and strength of support among them correctly. In order to safeguard their healthy existence and orderly development space, they need further clarification in concept differentiation, function orientation, the way and strength of support carefully.