Carrots can be called a treasure trove of nutrients, rich in a variety of vitamins (vitamins A, B, C, D, E), especially rich in β-carotene, the general orange type of β-carotene containing up to 50 to 100 mg / kg. β-carotene is the main source of vitamin A, hydrolyzed to form vitamin A, the human body is indispensable to a kind of vitamins, can promote the growth and development of the maintenance of normal vision , preventing night blindness, dry eye disease, upper respiratory tract diseases, but also to ensure the health of epithelial tissue cells, to prevent the occurrence and development of many types of epithelial tumors. Other types of carotenoids and carotenoids as a natural organic macromolecules can also remove oxygen free radicals, enhance the effectiveness of the human immune system. It also contains large amounts of soluble sugars, fiber, protein, anthocyanins, mineral elements, and pectin. Currently, carrots have been used as a healthy functional food.