The symptoms of lung nodules are mainly cough, chest pain, fever or coughing sputum, which are mainly related to the size and location of the tumor. Nodules are usually less than 3cm and very small. Nodules are also related to the location, for example, growing on the side does not cause symptoms easily, growing around the middle trachea, some people may cause cough, some people cause blood in sputum, not very obvious bleeding. These symptoms are in small nodules and are usually rarely present. Under the routine, most nodules are usually found by CT, so such nodules usually do not cause a lot of symptoms and are usually not felt a lot. But it is not true that just because a nodule is not felt or symptomatic, it is not serious or not noticed, which is also the wrong approach. Many patients tell their doctors that they do not feel anything and whether there is a problem. This disease causes symptoms on the one hand, and some of them are asymptomatic but not necessarily without problems.