If there is phlegm bleeding inside the patient’s throat: In the first case, consider that the patient ate a hard substance when eating and scratched the mucous membrane of the patient’s throat, so there may be phlegm accompanied by bleeding because of inflammation, but the amount will not be very large. In the second case, the mucous membrane of the patient’s throat is inflamed, and the mucous membrane of the back wall of the patient’s throat may rupture and bleed after coughing hard, so there is phlegm because of inflammation. In the third case, it is mainly considered that the patient may have occupational changes in the nasopharynx, such as nasopharyngeal carcinoma or nasopharyngeal hemangioma of the patient’s throat, which may also appear to have phlegm and bleeding symptoms. In the fourth case, patients with digestive system problems may also have phlegm bleeding. It is suggested that patients should go to the gastroenterology department for further examination to exclude the possibility of esophagitis or upper gastrointestinal bleeding, and actively deal with it and treat it symptomatically before the condition will improve.