As the largest dicotyledonous plant family, Asteraceae (also called as Compositae) has more than 25,000 species in about 1,600 genera, which are widely distributed all over the world. The family includes many important genera of industrial and ornamental plants, such as Chrysanthemum genus and Helianthus genus, etc. Most Chrysanthemum genus species are distributed in East Asia. Chrysanthemum morifolium, as a perennial herbaceous plant, originated in China and has a history of cultivation of more than 3,000 years. In the 8th and 17th centuries A.D., many chrysanthemum varieties were introduced and bred in Japan and Europe, respectively. In addition to their well-known ornamental value, chrysanthemums are also widely used in food, medicine and beverages.