Intrapulmonary lymph nodes are usually enlarged lymph nodes in the lungs due to various reasons. The main role of lymph nodes is to participate in the body’s immune response and play a protective role for the body, and they are found in various parts of the body. The main reasons for the enlargement of lymph nodes within the lungs to form intrapulmonary lymph nodes include inflammation of the lungs, tuberculosis, malignant tumors, etc., which stimulate the body’s immune system and cause the enlargement of the intrapulmonary lymph nodes. In order to diagnose what causes lymph nodes in the lungs, a puncture biopsy can be performed to clarify the nature of the lymph nodes. When lymph nodes appear in the lungs, it is recommended to go to the hospital, the clinical symptoms of tuberculosis, improve the relevant examination, and give targeted treatment after clarifying the cause of the disease.