Whether the sub-solid nodules in the lungs are malignant or not needs to be combined with CT review and puncture biopsy to make a comprehensive judgment. If the nodules have remained unchanged during the review and there are no physical symptoms, malignancy will not be considered; if the nodules appear to have increased in size during the review and there is an increase in the solid component, and if malignant cells are found by pathological puncture, malignancy will be considered. 1. Some of the residual inflammation or benign tumors will have corresponding changes after absorption, and the nodules are almost unchanged during the review process, which belong to benign lesions. 2. In the course of review, the nodule appears to increase in size or solid fraction, suggesting that the lesion is gradually proliferating, the cell volume increases, and malignant cells are found by puncture biopsy, which is determined to be malignant lesions. Sub-solid nodules in the lungs cause obvious symptoms of chest pain and cough, you need to consult a doctor in a timely manner, under the guidance of the clinician for standardized treatment, do not be negligent, so as not to delay the condition.