When patients develop tonsillitis, they usually do not produce significant symptoms of coughing up blood. Inflammation of the tonsils will most often cause patients to experience some degree of soreness in the throat, and may even cause difficulty in swallowing and eating smoothly. However, there are a small number of patients who may experience a small amount of blood in the sputum due to tonsillar inflammation, which may further affect the surrounding mucous membrane of the throat, causing congestion and swelling of the mucous membrane and submucous vessels, as well as vasodilatation, which may further lead to local mucous membrane rupture and repeated small amounts of blood leakage. In addition, some patients may further develop inflammation of the nasal cavity, sinuses, nasopharynx, or inflammation of the trachea and bronchi of the lower respiratory tract, which may also lead to repeated manifestations of blood in sputum and coughing up blood, and further detailed examination is needed to help analyze the etiology if necessary.