If the jelly sputum is brick-red in color, it is considered that the pneumonia may be caused by Klebsiella infection; if the jelly sputum is yellow in color, it is considered that it is necrotizing pneumonia or lung abscess caused by purulent bacteria; if the jelly sputum is rust-colored, it is considered that it is related to lobar pneumonia. 1. Klebsiella pneumonia: Its typical symptoms are acute onset, cough, sputum, fever, malaise, etc. The brick-red jelly-like sputum is the most common cause of this disease. Brick-red jelly-like is the characteristic of this disease. Sensitive bacteria can be given cephalosporin antibiotic treatment, drug-resistant bacteria need to be combined with drug sensitivity test, give targeted drugs, such as carbapenems (meropenem). 2. Necrotizing pneumonia or lung abscess: it can be caused by a variety of pathogenic bacteria in the lung septic infection, mainly caused by Staphylococcus aureus infection. It is characterized by high fever, coughing, coughing up a large amount of yellow jelly-like purulent sputum after the abscess breaks into the bronchial tubes, and can be treated with penicillin with anti-anaerobic drugs. 3. Lobar pneumonia: caused by Streptococcus pneumoniae and Haemophilus influenzae, characterized by high fever, coughing rust-colored jelly sputum and chest pain. Penicillins or cephalosporins can be chosen for treatment. Jelly sputum may have other causes, so we should go to the hospital in time and do the relevant examination, and then follow the doctor’s instructions to standardize the treatment.