The present invention relates to a soy milk having additive of Vitamin C, Vitamin C salt and Vitamin C or Vitamin C stereoisomers. The soy milk having the additive of Vitamin C is made by adding an ascorbic acid into a drink fabricated by using at least one bean as raw materials, and the soy milk having Vitamin C is helpful to increase the absorption rate of iron in small intestine, wherein the dose of the ascorbic acid is ranged in 25~50 mg/100mL. The soy milk having the additive of Vitamin C salt is made by adding an ascorbic acid salt into a drink fabricated by using at least one bean as raw materials, and the dose of the ascorbic acid ion provided by the ascorbic acid salt is ranged in 25~50 mg/100mL. Besides, The soy milk having the additive of Vitamin C stereoisomers is made by adding an ascorbic acid stereoisomers into a drink fabricated by using at least one bean as raw materials, and the dose of the ascorbic acid ion provided by the ascorbic acid stereoisomers is ranged in 25~50 mg/100mL.本發明係關於一種添加維生素C、維生素C鹽類或維生素C立體異構物之豆奶，其中，該添加維生素C之豆奶係藉由添加一抗壞血酸於以至少一豆類為製造原料的一飲品內而製成，可增加小腸對鐵的吸收率，其中，該抗壞血酸之添加劑量為25~50 mg/100mL；該添加維生素C鹽類之豆奶則藉由添加一抗壞血酸鹽於以至少一豆類為製造原料的一飲品內而製成，該抗壞血酸鹽所貢獻之抗壞血酸離子之劑量為25~50 mg/100mL；該添加維生素C立體異構物之豆奶則藉由添加一抗壞血酸之立體異構物於以至少一豆類為製造原料的一飲品內而製成，該抗壞血酸之立體異構物所貢獻之抗壞血酸離子之劑量為25~50 mg/100mL。
