To achieve the curative effect of relieving cough and resolving phlegm, Chen Pi is usually combined with other medicines to form a formula for decoction. It should be used under the guidance of a doctor. Chenpi is the mature fruit rind of Citrus sinensis and its cultivated varieties in the family of Rutaceae, warm in nature, pungent and bitter in flavor, belonging to the spleen meridian and lung meridian, with the effects of regulating qi and strengthening the spleen, drying dampness and resolving phlegm (removing phlegm in the body by drying dampness), which is suitable for the chest stuffiness caused by stagnation of qi and phlegm obstruction, lack of appetite, vomiting, or phlegm and dampness obstruction of lungs, resulting in coughing with much phlegm, etc. It can be used to treat various phlegm symptoms, especially damp phlegm, cold phlegm, and cough and sputum. Chenpi can be used for various phlegm conditions, especially for treating damp phlegm and cold phlegm. It is especially suitable for treating damp phlegm and cold phlegm. If it is used for treating cough with damp phlegm, with much phlegm, it can be used together with Pinellia and Poria. Cold phlegm cough, phlegm more thin, can be used with dry ginger, fine Xin, Schisandra chinensis and so on. Note that Chen Pi should be used with caution in cases of qi deficiency, such as fatigue and shortness of breath, as well as in cases of yin deficiency, such as heat in the hands and feet, hot flashes, night sweats (abnormal sweating after going to sleep, but sweating stops after waking up). If you want to use Chen Pi, you should take it under the guidance of a doctor and not self-medicate.