Two new phloroglucinol glycosides, 2,6 -dihydroxy- 3, 5 - dimethyl-l - isobutyrylbenzene-4-O-β-D-glucoside and 2, 6 -dihydroxy- 3, 5 -dimethyl- 1 - (2- methylbutyryl ) benzene-4-O-β-D-glucoside were isolated from Hypericum japonicum. Their structures were determined byspectroscopic and chemical methods.