Checking the lungs can be done with chest imaging tests, lung function tests, and blood tests. 1. Chest imaging examination. Chest imaging tests include chest CT, chest X-ray, chest MRI and ultrasound. 2. Lung function test. Lung function tests are commonly used in the diagnosis and treatment of respiratory diseases, including spirometry, bronchodilatation test, bronchial provocation test, etc. These tests can be used to determine whether a patient is suffering from respiratory diseases. Generally, it can be used to determine whether the patient suffers from chronic bronchitis, emphysema, bronchial asthma and so on; 3. Blood test. It is mainly to check the blood routine, C-reactive protein and other indicators, which can be used to determine whether the patient has an infection. In addition to the above mentioned tests, there will be other more detailed tests, it is recommended to go to the hospital to consult the doctor.