A solid nodular shadow in the lung is a small occupancy in the lung that can be determined by puncture, biopsy, and pathologic analysis to determine its benign malignancy. For the vast majority of solid nodular shadows in the lungs are benign, and polyp growths in the lungs due to inflammation and tuberculosis stimulation can be detected by chest CT. Clinically, for solid nodular shadow in the lung, adjuvant therapy can be performed by improving immunity, like taking Jin Shui Bao orally and eating fresh fruits and vegetables, which are beneficial for the improvement of the disease. Solid nodular shadows in the lungs are clinically difficult to remove, but they have minimal impact on lung function. If it is a malignant tumor, then it should be removed as early as possible so that lung cancer can be cured at an early stage.