The treatment of pulmonary nodules is based on the nature of the nodule, and the appropriate treatment plan should be chosen, such as inflammatory nodules, which should be given anti-inflammatory treatment, such as tuberculous nodules, which can be treated with anti-tuberculosis, and if tumor nodules need to be treated with active anti-tumor therapy. There are many causes of pulmonary nodules, the common ones are inflammation, tuberculosis and tumor, and there are also a few unexplained benign nodules. If a nodule in the lung is found during an examination, the nature of the nodule must first be clarified after the examination before it can be treated symptomatically. If there is no way to clarify the nature of the nodule, sometimes anti-infective treatment can be considered first. Because inflammatory nodules are more common in clinical practice, regular observation can also be considered. If the nodule is growing, it should be taken seriously and diagnosed by puncture if necessary. If there is a history of malignant tumor and a lung nodule appears, it is important to pay attention to the possibility of metastasis. Once a lung nodule is found, don’t be too nervous, generally benign ones are still common and malignant ones are still rare, actively cooperate with the doctor for examination and treatment is the key, active treatment may get relief.