Abstract: The variation of the contents of soluble solids，reducing sugars，soluble proteins，chlorophyll，carotenoids，vitamin C，and total phenols，as well as antioxidant capacities and glucosinolate profiles among different organs were investigated using Chinese kale（Brassica alboglabra Bailey）of typical varieties as material. The results showed that the contents of nutrients exhibited remarkable differences among different organs. In general，the highest contents of total phenols，vitamin C and soluble solids were found in inflorescences，and the significant differences existed between inflorescences and other organs. The contents of chlorophyll，carotenoids，soluble proteins and antioxidant capacities in leaves were remarkably higher than those in other organs. The roots contained markedly higher concentrations of glucosinolates，especially gluconasturtiin and glucoerucin，than those in other organs. Great differences in the nutrition value of bolting stem，the edible part of Chinese kale were observed among different varieties. JL-02 had the highest amounts of total phenols and antioxidant capacities. The significantly higher level of glucoraphanin and total glucosinolates was found in Dengfengzhongchi.

Key words: Chinese kale, variety, organ, nutrient, glucosinolate