Zanthoxylum bungeanum is not only the most commonly used seasoning, but also a traditional Chinese medicine. It can warm the middle warmer, relieve pain, remove dampness and dispel cold. Zanthoxylum bungeanum belongs to lung, kidney and liver, and has the functions of dispelling cold, tonifying kidney-yang, improving eyesight, promoting digestion and inducing fire to return to the source. Soaking feet with pepper water has the same effect as soaking feet with angelica and safflower, both of which can promote blood circulation and dredge collaterals, so that the whole body's blood vessels are smooth.