“相思子”与“赤小豆”均为豆科植物的种子,颜色与形状基本相似,易于混淆。“相思子”又名红豆、红添豆、相思豆、鸳鸯豆等,为豆科植物相思子的种子。药材性状:干燥种子呈椭园形,少数近于球形;长径5—7毫米,短径4—5毫米;表面红色;种脐白色椭园形,位于腹面的一端,其周围呈乌黑色,约占种脐表面的1/4—1/3;种脊位于种脐一端,呈略凸起直线状;种皮坚硬,不易破碎,内有两片子叶和胚根,均为淡黄色;气味青草样,味涩。以 “Acacia child” and “Zixiaodou” are the seeds of legumes. Their color and shape are basically similar and easy to be confused. “Acacia fruit,” also known as red beans, red beans, acacia beans, kidney beans, etc., are seeds of leguminous acacia seeds. Medicinal properties: dry seeds were elliptic, a few close to spherical; long diameter of 5-7 mm, short diameter 4-5 mm; surface red; umbilical white ellipse-shaped, located at the ventral end, the surrounding was black, About 1/4 to 1/3 of the surface of the umbilicus; the ridge is located at the end of the umbilicus, showing a slightly convex linear shape; the seed coat is hard, not easily broken, and there are two cotyledons and radicles inside, both pale yellow; Grass-like, astringent. To