The main nutrient components of rhizome were determined and evaluated in 20 seleng wormwood germplasm resources preserved in National Germplasm Wuhan Aquatic Vegetable Resource Garden. The dry matter， protein， soluble sugar and crude fiber contents were 17.90%， 3.28%， 10.14% and 1.09%， respectively. Based on the stem color， the contents of dry matter， protein， and soluble sugar were classified （red > green > white）. The protein content of green if compared to white seleng wormwood was equal， and the crude fiber content was further classified （white > red > green）. According to the blade shape， the contents of dry matter， protein and soluble sugar of wormwood rhizome were higher in broken leaf-seleng wormwood in comparison to willow-leaf-seleng wormwood， while the crude fiber content was observed opposite in both types. However， for each of nutrient components， no significant difference was observed between each of two types. The nutritional quality of red seleng wormwood and broken leaf-seleng wormwood was relatively better. The highest value on the contents of dry matter， soluble sugar and crude fibre was detected in Lishilouhao， and the highest protein content was found in Shayanglouhao. The partial correlation between dry matter content and protein content and that between dry matter content and soluble sugar content were significantly positive. The partial correlation between protein and soluble sugar was significantly negative.