Fennel is also known as the fragrant silk cabbage, fennel cabbage young leaves can be used as vegetables, fruit can be used as spices and medicine, fennel cabbage roots, leaves, whole grass can also be used as medicine. The roots, leaves and whole grass of fennel can also be used as medicine. It is cultivated all over the north and south of China. Mainly produced in Ningxia Xi'an town, Shanxi, Inner Mongolia, Gansu, Liaoning.

The seed of fennel is a condiment, and its stem and leaf parts are fennel greens. Big and small fennel are commonly used seasoning, can remove the odor in the meat, make it fragrant again, so it is called "fennel". People in the north often use fennel greens to make dumpling filling, the fennel greens for filling should generally be blanched in boiling water before making the filling. Moldy fennel should not be eaten. The people who have a deficiency of fire should not consume fennel greens, more food will hurt the eyes, long sores.

Fennel is pungent, sweet and warm, and has the effect of strengthening the stomach and promoting the flow of Qi. Fennel cabbage on the stomach cold pain, cold pain in the abdomen, dysmenorrhea, hernia pain, testicular syringomyelia, schistosomiasis and other diseases have a certain therapeutic effect. Fennel leaves contain flavonoid glycosides; fruits contain volatile oil, which has the effect of moving qi, relieving pain, strengthening the stomach and dispersing cold. The main component of fennel is fennel oil, which can stimulate gastrointestinal neurovascular, promote the secretion of digestive juices, increase gastrointestinal peristalsis, strengthen the stomach, the efficacy of qi, and help to relieve spasms, reduce pain. Fennelene can promote the maturation of bone marrow cells and release into the peripheral blood, there is a significant role in elevating white blood cells, mainly to elevate neutrophils, can be used for leukopenia.