Multiple ground glass shadows in both lungs do not necessarily mean lung cancer. There are many smokers or patients with chronic bronchitis who have ground glass density shadows in their lungs, which are more often benign. However, if there are solid components in the ground glass density shadow, you need to be highly alert to the possibility of lung cancer. The more solid components, the higher the possibility of malignancy, and then it needs to be treated. A puncture biopsy can be performed to confirm whether it is lung cancer or not. If the pathology is clearly lung cancer, surgical removal is often required. If the degree of malignancy is greater, some may choose surgery directly without puncture biopsy. Simple ground glass density shadow does not require special treatment, and regular review of chest CT is sufficient.