Examination of the alkaloids in the stem of Berberis amurensis $R_{UPRECHT}$ var. latifolia $N_{AKAI}$ was carried out. As tertiary bases, the biscoclaurin type base berbamine and oxyberberine as the berberine type were isolated, and jatrorrhizine, berberine, shobakunine as the berberine type and the aphorphine type magnoflorine were obtained as the quarternary bases.