通过龙葵的生药研究表明,其药材以茎叶为主,花和果实少见。其茎的构造和一般双子叶草本植物茎的构造相似,髓周韧皮部束的存在是茎的突出特征。其叶是典型的异面叶结构,叶脉维管束是双韧的。大量有疣点的多细胞非腺毛、叶下表皮碎片、花粉粒和有角质纹理的外果皮碎片是粉末鉴定的主要依据。化学定性和薄层层析结果证明了其所含的主要成分。 The crude drug research of Solanum nigrum showed that its medicinal materials were mainly stems and leaves, and flowers and fruits were rare. Its stem structure is similar to that of the general dicotyledonous herbaceous stem. The presence of the peripherical phloem bundle is the prominent feature of the stem. Its leaves are typical heterofacial structures, and the vascular bundles of the veins are double-tough. A large number of defective multicellular non-glandular hairs, lower leaf epidermal fragments, pollen grains, and keratinous exocarp fragments are the main basis for powder identification. Chemical characterization and thin layer chromatography proved its main components.