Fennel seeds, also known as cumin, contain a variety of volatile oils for its nutritional value; as a medicine, it has the effects of dispersing cold and relieving pain (relieving pain by removing cold from the body), regulating qi and harmonizing the stomach. As a traditional Chinese medicine, fennel seeds have the effect of dispersing cold and relieving pain, regulating qi and stomach, and can be used to treat cold hernia and abdominal pain (acute abdominal pain caused by internal cold and external wind-cold), dysmenorrhea, cold and pain in the abdomen, as well as distension and pain in the epigastric region, and vomiting and diarrhea caused by poor appetite. Fennel seeds should be used with caution in people with yin deficiency and fire (deficiency of yin essence in the body, resulting in hyperactive fire). After the appearance of discomfort should be timely medical treatment, under the guidance of the doctor to use medication, not self-medication, in order to avoid adverse consequences.