The phlegm is thick and sticky and coughs up like jelly, suggesting the presence of respiratory tract infections, and the common pathogens are Klebsiella pneumoniae and Diplococcus pneumoniae. 1. Klebsiella pneumoniae: a gram-negative bacillus, usually brick-red jelly-like sputum, the onset of disease is more acute, often accompanied by high fever, chest pain and other symptoms; treatment is often used for cephalosporin and penicillin antibiotics used in combination, such as cefdinir, ampicillin, etc.. 2. S. pneumoniae: it is a kind of gram-positive diplococcus, usually rust-colored jelly-like sputum, which can lead to lobar pneumonia after infection, and the lesions are often in one lobe or one lung segment. Treatment is usually cephalosporins and penicillins, such as cefixime and amoxicillin. If you cough sticky jelly-like sputum, you must consult a doctor in a timely manner, by the doctor through the examination of the specific pathogenic bacteria, and then choose the appropriate drug treatment, not blindly use their own medication, to avoid delaying the condition.