Sputum that is sticky and bloody is mainly seen in pathological diseases, such as diseases of the respiratory system, which can be seen in acute bronchitis, acute attacks of chronic bronchitis, bronchiectasis of the respiratory tract due to various causes, acute pneumonia, lung abscess, bronchopleural fistula, and idiopathic interstitial lung diseases due to various causes, combined with infections, bronchopulmonary cancer, etc. It can also be seen in diseases of the cardiovascular system, such as acute pulmonary edema due to left heart failure from various causes. At this time, CT or MRI of both lungs should be taken, respiratory secretions should be taken for pathogen culture, ECG and cardiac enzyme profile should be tested to clarify the cause and provide timely treatment.