The three treasures of Sanbao Tang are: Angelica sinensis, Radix Astragali and Radix Codonopsis. Angelica sinensis (scientific name: Angelica sinensis), alias Gangui, Qinnan, Xigui, Mingui, Danggui Ginseng, angelica tail, Wu Wen, Danggui Qu and Danggui, is a perennial herb with a height of 0.4-1m. The flowering period is from June to July, and the fruiting period is from July to September.

Astragalus membranaceus (scientific name: AstragaluspropinquusSchischkin) is a leguminous plant of Astragalus. Perennial herb, 50- 100 cm high. The taproot is stout, lignified, often branched and grayish white. The stem is erect, with many branches on the upper part, thin ribs and white pilose. The pinnate compound leaves have 13-27 leaflets, and the length is 5- 10 cm. The raceme is slightly dense, with 10-20 flowers; The total pedicel is almost as long as or longer than the leaf, and it is significantly elongated in fruit.