Chrysoeriol (1) was isolated as the main constituent from the methanol extract of the dried leaves of Eurya ciliata Merr. To investigate the bioactivities of 1 on bone metabolism, its effects on the function of osteoblastic MC3T3-E1 cells were studied. Compound 1 significantly increased the growth of MC3T3-E1 cells and caused a significant elevation of alkaline phosphatase activity, collagen content, and nodule mineralization in the cells (P < 0.05). Our data indicate that the enhancement of osteoblast function by 1 may be useful in the prevention of osteoporosis.