It has a special anise smell and corresponding sweet taste, which can be used for all foods, especially pastry foods. It is also the raw material for the manufacture of anisaldehyde, anisole, and the synthesis of the drug-negative hormone hexestradiol. Fennel brain can be widely used in the preparation of fennel essence, licorice essence, bayberry essence, etc., and also used in toothpaste, gargles, cosmetics, soap and so on.