In clinical practice, patients coughing up meat-like things are mainly considered to be caused by severe bronchitis and pneumonia. Bacteria, viruses, and other pathogenic microorganisms, after invading the lung tissues, can cause local necrosis, which is excreted through sputum and can form flesh-like sputum. This symptom may also be caused when there are polyps or tumors in the throat or lung tumors, and if the sputum is sticky and not discharged in time, it also has certain effects. You need to go to the hospital first for the appropriate examination, and according to the results of the examination, medication will be directed, or a surgical treatment plan will be developed for active treatment. It should also be noted that one particular bacterial infection is Klebsiella infection, which is prone to jelly-like red sputum after infection and looks like rotten flesh when discharged.