Diffuse pulmonary nodules are mainly treated for the causes, including lung inflammation, malignant tumors, tuberculosis, pneumoconiosis, etc. The main treatment is based on medication, and the pneumoconiosis condition allows the feasibility of lung cleaning treatment. 1. Lung inflammation: Lung inflammation can lead to diffuse pulmonary nodules, and the condition of patients can be improved through reasonable application of antibiotics, phlegmolytic drugs, asthma medicines and so on. Antibiotics such as cefuroxime, etc., phlegmatic drugs such as aminobromine hydrochloride, etc., asthma medicines such as theophylline extended-release tablets. 2. Malignant tumors: malignant tumors in the lungs are mostly metastatic tumors, which can be treated with radiotherapy, chemotherapy, targeted therapy, etc. Chemotherapeutic drugs such as cisplatin can be used. 3. Tuberculosis: most of them are pulmonary tuberculosis with granularity, which need regular anti-tuberculosis treatment, such as streptomycin, rifampicin and so on. 4. Pneumoconiosis: if the condition is mild, lung cleaning therapy can be considered, which can play a therapeutic role. When diffuse pulmonary nodules appear, it is recommended that patients seek timely medical treatment and listen to the advice of specialized doctors.