Objective: To ascertain the contribution of different floral parts to the total flavonoids of Trollius chinensis and the mainly enriched part of total flavonoids. Method: Colorimetric method was employed to assay the content of total flavonoids of different floral parts and gravimetric analysis method was used to determine the mass fraction of floral parts.The contribution degree was calculated with special algorithm. Result: The content of total flavonoids in each floral part is as follows: calyx(6.18%)

stalk(2.84%)

corolla(2.22%)

ovary(1.52%)

and stamen and pistil(1.07%).The mass fraction of each floral part is as follows: calyx(41.90%)

stamen and pistil(22.40%)

ovary(15.29%)

corolla(10.24%)

and stalk(10.17%). Conclusion: The contribution of five floral parts to total flavonoids is as follows: calyx(72.00%)

stalk(8.19%)

stamen and pistil(6.85%)

ovary(6.54%)

and corolla(6.42%).Calyx is the most enriched part of total flavonoids.