To find out if there are any problems in your lungs, you can do the following tests: 1) see if there are any symptoms, such as fever, cough, sputum, dyspnea, hemoptysis; 2) take blood tests to see if the white blood cells are high or if the lymphocyte ratio is high or low; 3) perform a chest X-ray or lung CT to examine the lungs to see if there are any lesions in the lungs. If there are lesions in the lungs, it depends on the cause, which can be inflammation, tuberculosis or tumor, and different treatments should be taken according to different causes. At the same time, people with lung problems should pay attention to avoid cold and flu and strengthen lung function exercises.