Phenethyl alcohol glycoside compound extracted from common cephalanoplos herb and application

The invention discloses a phenethyl alcohol glycoside compound extracted from a common cephalanoplos herb and application. The phenethyl alcohol glycoside compound is shown as a formula (I). According to the principle of 'homology of medicine and food', the common cephalanoplos herb is selected as a research object, and a modern extracting and separating technology is adopted to simply, conveniently and effectively separate and purify the common cephalanoplos herb so as to obtain the new phenethyl alcohol glycoside compound. The compound is novel in structure, has very good lipid-lowering activity and an anti-oxidation effect, can be applied to preparation of lipid-lowering medicines, especially to preparation of weight-reducing medicines, and can be also applied to preparation of anti-oxidation medicines, especially to preparation of free-radical scavenger medicines. An important theoretical basis is laid for further development of novel weight-reducing medicines remarkable in treating effect and small in toxic and side effect and medicines having the anti-oxidation effect.