There are many causes of pulmonary nodules, the most common being inflammatory nodules, but also tuberculous nodules and tumor nodules. If a lung nodule is found in the clinic, do not be overly nervous, but first examine it further to clarify the nature of the nodule. The most common nodule in the clinic is the inflammatory nodule. Generally, we can consider giving anti-infection treatment first, and then review the nodule if it is shrinking. Of course, if the enhanced CT suggests the possibility of tuberculosis, in this case, you need to go to the node prevention institute to check whether it is tuberculosis, and if it is tuberculosis, you need to give anti-tuberculosis treatment. If the nodules are growing, it is very likely that they are metastatic and must be treated actively to control the growth and increase of nodules. Lung nodules, which are often found in daily physical examination, should not be overly nervous in this case, actively listen to the doctor’s advice, further examination, clarify the causes of nodules, dynamic observation, and systematic treatment if necessary.