Spiraea prunifolia var. simpliciflora (Rosaceae) is a deciduous. latifoliate shrub growing in most parts of Korea. The roots of this plant have been used for malaria, as antipyretics and emetics. From the roots of this plant, sterol glycoside and two triterpenoids were isolated and the structures were elucidated by chemical and spectroscopic methods. They were identified as $3{eta}-hydroxyurs-12-ene-28-oic$ acid (ursolic acid.1), $2{alpha}$, $3{eta}$, $19{alpha}-trihy-droxyurs-12-ene-28-oic$ acid (tormentic acid.2) and ${eta}-sitoste-rol-3-O-{eta}-D-glucopyranoside$ (3).