The appearance of multiple nodules in both lungs is more serious. Most of the cases of multiple nodules in both lungs are considered to be caused by the spread of inflammation in the lungs or the metastasis of malignant tumors. The presence of viral or bacterial infections in the lungs or external environmental stimuli that cause lung tissue lesions, such as tuberculosis, viral pneumonia, pneumoconiosis, etc., can cause multiple nodules in both lungs with the spread of inflammatory or diseased tissue. The appearance of multiple nodules in both lungs may be the result of malignant tumor cells in the lungs or other organs, which may have metastatic conditions, thus causing the symptoms of extensive bilateral lung nodules. It is recommended to go to a regular hospital for further detailed examination, such as X-ray examination, CT examination, sputum test, blood test, etc., to determine the specific cause of the disease and then develop a suitable treatment plan.