Solid pulmonary nodules are not normally considered serious. Solid nodules refer to solid nodules in the lungs that are less than five millimeters in diameter, and most of them are benign, so normally, they are not considered serious. Solid pulmonary nodules are mostly caused by bacterial, mycoplasma and other pathogen infections, patients have no obvious symptoms in the early stage, with the development of the disease, there may be coughing, coughing sputum, fatigue and other symptoms. When patients find solid lung nodules, they should go to the hospital in time for pathologic examination, etc., to clarify whether it is a benign lesion, such as vasculitis, or a malignant lesion, such as lung cancer. If it is benign, it is only necessary to regularly monitor the dynamic changes of the nodule and whether there is any change in the systemic symptoms. If it is malignant, symptomatic treatment should be carried out under the guidance of the doctor in a timely manner. It is recommended that when patients are found to be suffering from solid micronodules in the lungs, they should go to the hospital for examination in time to clarify the cause of the disease, and if it is a malignant lesion, treatment should be carried out under the guidance of the doctor.