Objective:To investigate the chemical constituents of the whole grass of Lespedeza virgat.Method:Various chromatographic techniques were used to separate and purify the chemical constituents from ethyl acetate part and n-butyl alcohol part extract of Lespedeza virgate

and the isolated compounds were identified according to their physicochemical and spectroscopic data.Result:Seven compounds were isolated and identified as physcion（1）

chrysophanol（2）

kaempferol-3

7-di-O-β-D-glucopy-ranoside（3）

kaempferol-3-O-β-D-rutinoside（4）

kaempferol-7-O-α-L-rhamnopyranoside（5）

n-hexacosanoic acid（6）

n-octacosanol（7）.Conclusion:The compounds 1

2

3

4

6 were isolated for the first time from this genus

and the compound 7 was isolated from the plant for the first time.