Lung nodules do not have a precise TCM-specific name attributed to them, and some studies have reported attributing them to the categories of lung gangrene and asthma based on their site of onset and pathogenic characteristics. Chenpi belongs to a kind of traditional Chinese medicine, which may be beneficial for the adjuvant treatment of pulmonary nodules. Because Chenpi is effective in regulating qi and strengthening the spleen (regulating qi and strengthening the spleen) and drying dampness and resolving phlegm (removing phlegm by drying dampness), it can regulate qi and dispel phlegm for patients with lung nodules. The pathogenesis of most lung nodules is deficiency of positive qi, recurrence of external evils, phlegm and stagnation of phlegm, which leads to nodules, and some of them may have symptoms such as coughing, wheezing, etc. Chen Pi has the ability to regulate qi, strengthen the spleen, and eliminate phlegm. Pericarpium Citri Reticulatae has the effect of regulating qi and strengthening the spleen, drying dampness and resolving phlegm, and is often used in the treatment of epigastric (abdominal) distention and fullness, poor appetite and vomiting, and coughing with excessive phlegm. It is effective in relieving cough and phlegm in patients with pulmonary nodules. At present, Chenpi is used as an adjunctive medicine for the treatment of pulmonary nodules, which can alleviate the related symptoms. If the diagnosis of pulmonary nodules is confirmed, it is recommended to go to the hospital for further counseling, and do not use the medicine blindly.