Diffuse nodular shadows in both lungs is a CT description of an intrapulmonary lesion that suggests multiple nodular changes in both lungs. The clinical diagnosis of diffuse nodular shadows in both lungs is suggested by the presence of multiple nodular densities in both lungs, distributed throughout the lungs on CT. The corresponding condition may be related to inflammation, tuberculosis, tuberculosis, metastasis, etc. It needs to be judged in conjunction with clinical history and laboratory tests, and can be controlled by regular anti-inflammatory, anti-tuberculosis, hormone application, and radiotherapy. Diffuse nodules in both lungs accompanied by obvious cough, fever, and decline in physical condition should be observed by a doctor in time, and standardized treatment should be carried out under the guidance of the clinician after diagnosis of the disease, so as to avoid delaying the condition.