The authors have studied to elucidate the constituents of the volatile oil Saxifraga stolonifera Meerb.The volatile oil was treated with 2N-sodium carbonate, then with 2N-sodium hydroxide solution, and was separated into the three parts; neutral, sodium carbonatesoluble, and sodium hydroxide soluble part.Each part was investigated by means of column chromatography, gas chromatography, infrared spectrum, mass spectrum, nuclearmagnetic resonance spectrum and chemical method.As a result, forty eight kinds of compound were detected as the constituents of this volatile oil as follows leaf alcohol, α-pinene, camphene, 1, 4-cineole, limonene, linalool, borneol, citronellol, linalyl acetate, geraniol, bornyl acetate, α-terpinyl acetate, geranyl acetate, dodecanal, β-elemen, α-cedrene, calamenene, n-C17H36, n-C18H38, n-C19H40, iso-C20H42, n-C20H42, iso-C21H44, n-C21H44, n-C22H46, iso-C23H48, n-C23H48, n-C24H50, n-C25H52, n-C26H54, n-C27H56, n-C28H58, n-C30H62, n-C31H64, n-C32H66, caprylic acid, capric acid, lauric acid, myristic acid, pentadecanoic acid, palmitic acid, stearic acid, oleic acid, linoleic acid, phenol o-cresol, p-cresol and m-cresol.