The usual causes of coughing up sputum like glue are: Klebsiella pneumoniae pneumonia, bronchitis, chronic obstructive pulmonary disease. 1. Klebsiella pneumonia: Klebsiella pneumoniae is a gram-negative bacterium, which is easily infected in the alveoli, causing liquefaction and necrosis of tissues to appear as abscesses, forming purulent effusions, resulting in jelly-like sputum, which is usually brick-red or reddish-brown in color. Aminoglycoside antibiotics, such as gentamicin and amikacin, can be used for treatment as prescribed by the doctor. 2. Bronchitis: usually due to bacterial infection, inflammation will cause the accumulation of sputum in the bronchial tubes, and with the propagation of bacteria, it will lead to changes in the nature and color of sputum, and sputum will be sticky and gelatinous. When the bacterial infection is clear, antibiotics such as ceftazidime can be used. 3. Chronic obstructive pulmonary disease (COPD): usually associated with environmental pollution, long-term smoking, heredity, pathogenic infections, etc., patients can cough up gel-like sputum, accompanied by cough, shortness of breath, dyspnea and other symptoms. When coughing up sputum like gel, it may also be seen in other diseases, it is recommended to consult a doctor in time to clarify the diagnosis and targeted treatment. The above medications should be used under the supervision of a physician.