Coughing out jelly-like sputum indicates a serious infection in the respiratory system and it is an infection due to Klebsiella pneumoniae. Klebsiella pneumoniae is a gram-negative bacillus with pods, which is very pathogenic and easily grows and multiplies in the alveoli, causing necrosis and liquefaction of alveolar tissue and even the formation of multiple abscesses. The lesions can involve the pleura and pericardium and can cause exudative or purulent effusions. The effusion often becomes jelly-like in shape, so the sputum coughed up is jelly-like. This is the time when early targeted antibiotic treatment is the key to cure. The first choice is aminoglycoside antibiotics, such as gentamicin, kanamycin, tobramycin, and butamycin, which can be given intravenously or intramuscularly for treatment. If it is more serious, you can use some cephalosporin antibiotics at the same time to combine treatment, like cefoxitin, cefotaxime, the effect is good.