Objective: To investigate the ethyl acetate-soluble chemical constituents of fibrous roots of Liriope muscari. Method: The compounds were separated by using various kinds of chromatography and their structures were identified on the basis of chemical and spectroscopic methods. Result: Eight compounds were isolated from the fibrous roots of Liriope muscari. Their structures were established as 3

5-dihydroxy-7-methoxy-3-(4-hydroxybenzyl)chroman-4-one (1)

3

5-dihydroxy-7-methoxy-6-methyl-3-(4-hydroxybenzyl)chroman-4-one (2)

(4R

5S)-5-(3-hydroxy-2

6-dimethylphenyl)-4-isopropyldihydrofuran-2-one (3)

aurantiamide acetate (4)

emodin (5)

stigmasterol (6)

N-p-coumaroyltyramine (7)

β-daucosterin (8). Conclusion: Compound 1 was isolated and established as a novel homoisoflavanone. Compounds 4-6 were isolated from this genus for the first time. Compound 8 was isolated from this plant for the first time.