Spitting up red sputum is most common in respiratory diseases, such as acute tracheobronchitis and severe coughing caused by lung infection, which may destroy capillaries and bleed, and bronchial dilatation, which may also show spitting up red sputum and may also cause hemoptysis and endanger life, so patients should seek medical treatment promptly. In addition to spitting up bloody sputum, coughing and coughing up yellow pus sputum may also occur. In addition to coughing and red sputum, patients with pulmonary tuberculosis also have symptoms such as low fever in the afternoon, hot flashes and night sweats, emaciation and weakness. Malignant tumors of the lung can also present with red sputum, commonly found in people over 40 years of age who smoke, and are often accompanied by symptoms such as wasting, weakness, coughing, wheezing, and chest tightness. In addition, oral bleeding, such as gingivitis, swollen and painful gums, can also appear as gum bleeding, and can also see the symptoms of red spit. In the case of nasal bleeding, nasal bleeding flows back into the mouth for various reasons and is spit out by coughing, and red sputum can also be seen, along with symptoms such as nasal congestion and runny nose. In the case of pharyngitis, there can be dry throat, itchy throat, irritating cough, and red spit. Of course, it can be accompanied by symptoms such as foreign body sensation in the throat.