根含总生物碱约0.93%,其中苦参碱(matrine)0.52%,氧化苦参碱(oxyma-trine)0.35%,以及微量的臭豆碱(anagyrine)和甲基金雀花碱(methylcytisne);并含槐果碱(sophocarpine)。黄酮类化合物有紫檀素(pterocarpin)和l-三叶豆高丽槐甙(l-trifolirhizin,l-maackioin-β-D-glucoside),后者经酶水解得l-高丽槐素(l-maackiain),均为紫檀素类化合物,有抗癌作用,其作用甙比甙元强,右旋体比左旋体强。另含山豆根素(sophoranone)、山豆根查耳酮(sophoradin)、山豆根色烯素(sophoranochromene)、山豆根色烯查耳酮(sophoradochromene)、山豆根色烯素(sophoranochromene)、山豆根色烯查耳酮(sophoradochromene)、山豆根色满素(2-[{3′-hydroxy-2′,2′-dimethyl-8′-(3-methy-2-butenyl)}chroman-6′-yl]-7-hydroxy-8-(3-methyl-2-butenyl)chroman-4-one)、山豆根苯并二氢呋喃素(2-[{2′-(l-hydroxy-l-methylethyl)-7′-(3-methyl-2-butenyl)-2′,3′-dihydrobenzofuran}-5′-yl]-7-hydroxy-8-(3-methyl-2-butenyl)chroman-4-one)、大豆素(daiazein)、山豆根苯并吡喃素(2-[(7′-hydroxy-2′-dimethyl-2H-benzopyran)-6′-yl]-7-hydroxy-8-(3-methyl-2-butenyl)chroman-4-one)、4′,7-二羟基-6,8-双(3-甲基-2-丁烯)二氢黄酮(4′,7-trihydroxy-6,8-bis-(3-methyl-2-butenyl)flavanone)、2′,4′,7-三羟基-6,8-双(3-甲基-2-丁烯)二氢黄酮(2′,4′,7-trihydroxy-6,8-bis-(3-methyl-2-butenyl)flavanone)、山豆根新色烯查耳酮(6-[3-(2′,4′-dihydroxyphenyl)acryloyl]-7-hydroxy-2,2-dimethyl-8-(3-methyl-2-butenyl)2H-benzopyrane)、山豆根新色烯素(2-(2′,4′-dihydroxyphenyl)-8,8-dimethyl-10-(3-methyl-2-butenyl)-8H-pyreano[2,3-d]chroman-4-one)及柒料木素;其所含酚性物质,水解得咖啡酸和长链醇(CnH2n+1OH,n=20,21,23,24,25,26)其中以C26为主,占72.4%;此外,尚含羽扇豆醇、β-谷甾醇、维生素C和维生素B1。有报道,中性多糖由D-半乳糖和D-葡萄糖组成,其分子比为1:1。