紫背菜又称为红凤菜、观音苋、红背菜、血皮菜、双色三七草等,为菊科三七草属多年生宿根草本植物。紫背菜含有较全面的对人体健康有益的营养成分,据测定,其食用部位含有纤维素、碳水化合物、粗蛋白、维生素B1、维生素B2、维生素C、钾、钙、铁、磷、铜、锰等。民间认为紫背菜性微甘辛平,清热凉血消肿,同时还有抗寄生虫和抗病毒等功效。以前只在南方生长,近 Red cabbage, also known as red cabbage, Guanyiny amaranth, red back dish, blood vegetables, two-color three notoginseng, Asheria genus perennial herbaceous perennial. It has been determined that the edible parts contain cellulose, carbohydrate, crude protein, vitamin B1, vitamin B2, vitamin C, potassium, calcium, iron, phosphorus, copper, Manganese and so on. Folk that the purple back vegetables micro-Xin Ping, heat and cooling swelling, but also anti-parasites and anti-virus and other effects. I used to grow only in the south