New small nodules after lung adenocarcinoma surgery may be due to recurrence, but other diseases can not be excluded. It is necessary to go for further chest CT, whole body PET-CT and bronchoscopy to clarify the cause of the disease, and then carry out treatment under the guidance of doctor. Nodules found after lung adenocarcinoma surgery may be caused by recurrence, and it is necessary to go for chest CT examination in time to clarify whether there is metastasis and recurrence of cancer cells. If there is recurrence, comprehensive treatment should be carried out under the guidance of doctors. However, there is also a possibility that new tiny nodules may appear due to the weakened body after lung adenocarcinoma surgery and infectious diseases such as pneumonia or tuberculosis. It is recommended to have further examination to find out the cause and then carry out treatment under doctor’s guidance. If there are no other symptoms, no medication is needed for the time being. Regular checkups are needed to observe the changes of the nodules, and it is recommended to clarify the cause of the disease under the diagnosis of a doctor in time and carry out treatment.