1, family and genus difference: Foeniculum vulgare L. is the dried and mature fruit of Foeniculum vulgare L. and anise L. is the Illicium of Magnoliaceae.

2. Appearance difference: fennel has 8 horns, the color is dark brown, the horn petals are thick and the sharp corners are straight, and the pedicle is bent upwards, while fennel looks like chaff and is granular.

3, taste difference: anise has licorice flavor, tastes sweet, and fennel also has camphor smell, which has sweet and bitter taste and a sense of tongue.

4, efficacy difference: anise has the effect of expelling wind and regulating qi, and regulating stomach, while fennel has the effect of dispelling cold and relieving pain, warming kidney and reducing urine and appetizing and regulating qi.