Coughing up sputum that is hard and meat-like is generally considered as respiratory tract infection caused by Mycobacterium tuberculosis, Staphylococcus aureus, etc. In addition, other lung tumors such as bronchopulmonary carcinoma can not be ruled out. 1. Respiratory system infection: when the patient has viral, bacterial or mycobacterial infections, or bronchial dilatation combined with infection, it will cause inflammation in the respiratory system, sputum retention, and sputum plugs similar to flesh-like sputum can be coughed up. 2. Lung tumor: if there are occupying lesions in the respiratory tract such as misshapen tumors and bronchopulmonary carcinoma, which cause the shedding of cancer cells or tumors, then it can be clarified by CT and other imaging examinations and pathological examinations. Coughing up sputum that looks like meat usually has more causes, and in this case, it is necessary to consult a doctor in time to make a clear diagnosis.