Lung nodules can cause cough mainly due to the causes of lung nodules, including pneumonia, tuberculosis, lung cancer, smoking or environmental stimuli. 1. Pneumonia is the most common cause, because pneumonia can cause local tissue damage, and subsequently can form lung nodules, at the same time due to pneumonia caused by cough symptoms. 2. Tuberculosis is one of the causes of pulmonary nodules, which itself can form localized tuberculosis foci and pulmonary nodules at the same time. Cough is a typical symptom of tuberculosis. 3. Lung cancer, malignant nodules in the lungs, due to the compression of local bronchial tubes by the tumor, etc., cough symptoms may appear. 4. Smoking or environmental stimulation, such as long-term in the dust environment, etc., can cause cough performance, foreign body can also form lung nodules. The specific cause of the disease needs to be clarified after medical examination, and at the same time according to the doctor’s instructions for treatment.