Old Chen Pi is a traditional Chinese medicine that can be directly infused and drunk, and has the effect of strengthening the spleen and appetite, which is particularly effective for people with spleen deficiency and little food, indigestion, nausea and vomiting, and also has a good effect on the stomach bloating caused by poor digestive system of the gastrointestinal tract, and can be used in combination with other drugs for better effect, such as malt and Shen Qu. When used in combination with Atractylodes Macrocephala, Poria and Licorice, it is particularly effective in drying dampness and resolving phlegm, while the pectin contained in Old Chen Pi also has a preventive effect on arteriosclerosis. It can be used in combination with Mucuna Pruriens and Citrus Aurantium to treat abdominal fullness, loose stools and diarrhea; with ginger to treat stomach cold and vomiting; and with Huang Lian to treat stomach heat and vomiting. In addition to promoting qi, old chenpi also has a diuretic and laxative effect, and is used for edema, unfavorable urination, and obstructed bowel movements.