The main results were as following:The content of the total alkaloids in Sophora alopecuroides L is analyzed by the acid dye colorimetry method and the result is 8.21%.

• 用酸性染料比色法测定对苦豆子样品中总生物碱的含量进行了测定；测定结果为苦豆子样品中总生物碱含量为8.；21%25。