Community structure of copepods, including species composition, population dynamics and standing crops, was studied in a shallow, macrophytic lake, lake Biandantang (Hubei, China). During one year study, 14 species (9 Cyclopoida and 5 Calanoida) were found. In terms of annual average density, the dominant Cyclopida were Mesocyclops notius, Cyclops vincinus vincinus and Thermocyclops brevifurcatus, and mean while Neodiaptomus yantsekiangensis and Sinocalanus dorrii dominated the Calanoida. A comparison of species composition of Copepoda in five macrophytic lakes along the Changjiang River shows that the species number of Copepoda is not proportional to the surface area of the lake, which is not Coincident with Dodson' s conclusion on the positive relationship of lake surface area vis-a-vis cladocera species number in European and North American Lakes. It was also found that although there were as many as 35 species of planktonic Copepda in these lakes, the dominants were quite similarly limited to a few genus or a few species, while the most other species only appeared incidentally.