化学成分含黄药子素(diosbulbin)A-H,8-表黄药子素E乙酸酯(8-epidiosbulbin E acetate)。薯蓣皂甙元(diosgenin),D-山梨糖醇(D-sorbitol),2,4,6,7-四羟基-9-10-二氢菲(2,4,6,7-tetrahydroxy-9,10-dihydro phenanthrene),2,4,5,6-四羟基菲(2,4,5,6-tetrahydroxyphenantyhrene),4-羟基-(2-反-3\“,7\“-dimethylocta-2\“,6\“-辛二烯基)-6-甲氧基苯乙酮[4-hydroxy(2-trans-3\“,7\“-dimethylocta-2\“,6\“-dienyl)-6-methoxyacetophenone],4,6-二羟基-2-O-(4\“-羟丁基)苯乙酮[4,6-dihydroxy-2-O-(4\“-hydroxybutyl)acetophenone],二氢薯蓣碱(dihydrodioscorine),蔗糖,还原糖,淀粉,皂甙,鞣质等。