Abstract: This article summarizes Professor Wang Canhui's experience in treating pulmonary nodules. It believes that qi deficiency is the root cause of pulmonary nodules, and phlegm and blood stasis are the symptoms; emphasizes the important role of emotional factors; summarizes the etiology as deficiency, depression, phlegm, stasis, and toxin, and the basic pathogenesis is lung qi deficiency, with phlegm and stasis accumulation. The treatment should focus on replenishing qi and clearing the lungs, activating blood circulation and dissipating knots. Meanwhile, attention should be paid to the smooth flow of qi movement, and good use of empirical medicinal pairs to achieve the purpose of strengthening healthy qi, dispelling pathogen and dispersing nodules.