Er Chen Wan can be used to dispel phlegm-dampness and should be used according to doctor’s prescription. Er Chen Wan is composed of Chen Pi, Pinellia, Poria and Glycyrrhiza. It has the effects of drying dampness and resolving phlegm (removing phlegm from the body by drying dampness), regulating qi and harmonizing the stomach. It is mainly used for the treatment of cough and phlegm caused by stagnation of phlegm and dampness, distension and congestion in the chest and epigastric region, nausea and vomiting. Avoid smoking, alcohol, spicy, cold and greasy food. It is not advisable to take tonic Chinese medicine at the same time. Not suitable for dry cough caused by lung yin deficiency. If symptoms are not relieved after 7 days of taking the medicine, go to the hospital for consultation. If there is any discomfort, it is recommended to consult a doctor promptly. If medication is needed, it should be diagnosed by a doctor and the treatment should be standardized according to the doctor’s instructions.