Patients who have bilateral subcostal pain may be caused by pleurisy, tuberculosis, bronchiectasis and other diseases. 1. Pleurisy: pleurisy is an inflammation that occurs in the pleural cavity, and its main clinical manifestations are fever, cough, chest pain, chest tightness and dyspnea, etc. When patients have bilateral subcostal pain, it may be caused by pleurisy. 2. Tuberculosis: Tuberculosis is a kind of respiratory infectious disease caused by Mycobacterium tuberculosis infection, and patients with tuberculosis may have symptoms such as hidden pain under the ribs bilaterally, coughing and coughing up sputum. 3. Bronchiectasis: Bronchiectasis mainly refers to the irreversible expansion of bronchial tubes and fine bronchial tubes caused by repeated infections or non-infectious factors. When patients suffer from bronchiectasis, they may have symptoms such as coughing, hemoptysis, dyspnea, and bilateral subcostal pain. In addition, intercostal neuritis, costochondritis, myocardial strain, coronary heart disease, pulmonary heart disease and other diseases may also cause bilateral subcostal pain. It is recommended that the patient consult a doctor in time for examination, to clarify the cause of the disease and then treat the symptoms.