It has the function of regulating qi and lowering rebelliousness, regulating the middle and opening up the stomach, drying dampness and resolving phlegm. It is mainly used for treating stagnant gas and dampness in the spleen and stomach, fullness in the chest and diaphragm, distension and pain in the epigastric region, inability to think of food and drink, vomiting and retching, unfavorable bowel movements, stagnant lung gas, cough and phlegm, and also for treating the beginning of canker sores. After years of research, it is now known that Chenpi has many pharmacological effects.

1. On the role of the digestive system: Chenpi contains volatile oil, the gastrointestinal tract has a mild stimulating effect, can promote the secretion of digestive juices, to eliminate the intestinal stagnation of gas, showing the aroma of the stomach and drive the wind down the effect of gas.

2. Effects on cardiovascular system: Chenpi decoction, alcohol extracts, etc. can stimulate the myocardium, but when the dose is too large instead of inhibition. In addition, it can also make blood vessels produce mild contraction, rapidly elevate blood pressure. Pectin in the peel also has a preventive effect on atherosclerosis caused by high-fat diet.

3. The role of the respiratory system: the volatile oil contained in Chenpi has a stimulating passive expectorant effect, so that phlegm is easy to cluck out. Chenpi decoction has a weak dilatation effect on bronchial tubes. Its alcoholic extract has a high asthmatic potency.

4. On the role of the genitourinary system: Chenpi decoction can make the renal vasoconstriction, so that the amount of urine decreased.

5. Anti-inflammatory effect: Chenpi decoction with vitamin C, vitamin K and can enhance the anti-inflammatory effect.

Chenpi decoction side effects are very small, animal multiple tests have not seen acute poisoning. Caution should be exercised in cases of qi deficiency, yin deficiency and dry cough, vomiting of blood, and red tongue with little fluid and internal solid heat.

Pericarp is used medicinally to regulate qi, invigorate the stomach, dry dampness and dispel phlegm. In Chinese medicine, "Chen Pi Half Xia Tang" and "Er Chen Tang" mainly rely on Chen Pi to cure diseases. Chenpi as the main ingredient in the preparation of proprietary Chinese medicines, such as Chenpi, snake gall, licorice Chenpi, Chenpi cream, Chenpi powder, etc., is to resolve phlegm and lower the qi, elimination of stagnation and stomach good medicine.

In cold fruits, food, Xinhui Chenpi plum, Chenpi duck, Chenpi wine, its color, aroma and taste are characteristic. If you add Chenpi to make dishes, it not only removes the stinky flavor of fish, but also makes the dishes especially delicious. Making green bean paste, red bean porridge and other desserts, if you add a little peel, the flavor is very fragrant.