High density dense shadow is seen in the bronchial tube, there may be phlegm embolus of bronchial tube, bronchial foreign body, bronchial tuberculosis and other diseases, different results may take different treatment, generally there are oral medicines, endoscopic treatment and other ways. 1. Bronchial sputum embolus: Mostly due to various infections, resulting in increased secretions in the airways, sputum embolus formation, leading to airway obstruction. If it is relatively mild, it can be treated with phlegm-reducing drugs as prescribed by doctors, such as aminobromine hydrochloride and acetylcysteine, etc. If it is serious, it can be treated with bronchoscopy. 2. Bronchial foreign body: through the bronchoscope can visualize whether there is a bronchial foreign body in the airway, but also through the bronchoscope to remove the bronchial foreign body. 3. Bronchial tuberculosis: Bronchial tuberculosis can also be seen in the bronchial high density dense shadow, if the bronchial tuberculosis is determined, generally need anti-tuberculosis treatment. If bronchial tuberculosis is identified, anti-tuberculosis treatment is usually needed. High-density dense shadows in the bronchial tube can also be seen for other reasons, such as bronchial tumors, etc. It is recommended to go to the regular hospital for timely examination, diagnosis of the cause of the disease, and treatment.