Coughing up bloody sputum in the morning after coughing up is gone may be caused by bleeding gums, pharyngitis, bronchitis, bronchiectasis, tuberculosis, etc. 1. Bleeding gums: Mostly due to dental calculus and plaque is more, when brushing teeth easily lead to bleeding gums, thus causing coughing up bloody sputum. 2. Laryngitis: blood in the sputum can be caused by laryngitis, due to coughing in the morning is more serious, resulting in capillary rupture, thus coughing up bloody sputum. 3. Bronchitis: a chronic non-specific inflammation of the bronchial tubes, mainly manifested in coughing, coughing up sputum, coughing may lead to the throat or bronchial mucous membrane rupture bleeding, resulting in coughing up bloody sputum. 4. Bronchiectasis: mainly repeated coughing, may also cough up purulent sputum or coughing up blood sputum, mainly due to bronchiectasis involving blood vessels, resulting in blood vessel rupture. 5. Tuberculosis: caused by tuberculosis infection, bronchial mucosal damage or blood vessels involved in coughing up bloody sputum or hemoptysis. Coughing up blood sputum in the morning after coughing up no more may also be caused by other reasons, it is recommended to go to the hospital in a timely manner, cooperate with the doctor for examination, to clarify the cause to take targeted treatment.