1, fennel seeds are crushed and brewed with boiling water. After stewing for 10 minute, add proper amount of honey and mix well before drinking.

2, fennel ketone and anisaldehyde, etc. Its aroma mainly comes from aromatic substances such as anisone and anisaldehyde. Fennel can stimulate gastrointestinal nerves and blood vessels, promote the secretion of saliva and gastric juice, stimulate appetite and help digestion; Fennel also has the functions of promoting intestinal peristalsis, spasmolysis, analgesia and antibacterial.