Calendula is rich in a variety of vitamins, especially vitamin A and vitamin C, to prevent pigment precipitation, enhance skin luster and elasticity, slow down aging and avoid wrinkles. Almost all parts can be eaten; its petals have the function of beauty, and the flowers contain carotenoids, tomato hydrocarbons, myricetin, yuhonghuang, volatile oil, resin, mucus, malic acid, etc. The root contains bitterness, diol, and the seed contains glyceride, wax alcohol and alkaloid.