Lung problems should first hang up the respiratory department, if it is coughing and coughing up sputum, there is a fever, usually do a blood routine, lung CT or chest X-ray to further clarify the diagnosis, the most common causes of acute tracheobronchitis, lung infections and so on respiratory infectious diseases, if it is coughing and coughing up sputum, wheezing and shortness of breath, the most common wheezing bronchitis, COPD, bronchiectasis, interstitial lung disease and so on, generally in addition to the CT of the lung, blood routine, can also do a lung function to further clarify the diagnosis. The most common types of shortness of breath are wheezing bronchitis, chronic obstructive pulmonary disease, bronchial dilatation, interstitial lung disease, etc. Generally speaking, in addition to lung CT, blood routine, you can also do a lung function to further clarify the diagnosis. If there is cough, hemoptysis, chest pain, wheezing and shortness of breath, pulmonary embolism may be suspected, and pulmonary arteriography is needed to further clarify the diagnosis. If there are symptoms such as emaciation, fatigue, night sweats, cough, hemoptysis, etc., it should be suspected that the lung malignant tumor or tuberculosis, and need to carry out further pathological or cytological diagnosis to clarify.