The invention relates to a composition containing extracts of the fruit of Hoveniadulcis Thunb., gallocatechin, and methyl vanillate as active ingredients for preventing and treating bone disease. The extracts of the fruit of Hoveniadulcis Thunb., the gallocatechin, and the methyl vanillate according to the present invention are natural materials and thus cause no side effects, and may activate the Wnt/β-catenin pathway to promote bone formation rather than inhibiting bone decomposition, and therefore may be effective in treating osteoporosis and related diseases. In addition, the extracts of the fruit of Hoveniadulcis Thunb., the gallocatechin, and the methyl vanillate according to the present invention may have the effects regrowing hair and preventing and treating wounds and metabolic diseases related to the activation of Wnt/β-catenin pathway.