There are more causes of red blood in the throat: 1. Chronic inflammatory stimuli, such as chronic tonsillitis, chronic nasopharyngitis, chronic pharyngitis, resulting in congestion, edema and lymphatic follicular hyperplasia of the mucosa and submucosa of the throat. 2. Bad habits, stimulation of spicy diet, smoking, drinking and direct intake of harmful gases, resulting in congestion of the mucosa of the throat. 3. The stimulation of acid reflux, sour water and acid gas caused by gastrointestinal dysfunction can also lead to congestion and edema of the mucous membrane in the throat. Therefore, in terms of treatment, patients need to clarify the cause first. If it is recurrent inflammation of the tonsils, resection is required. If it is a stomach dysfunction, the patient needs to eat a light diet, quit smoking and alcohol, and not eat spicy and stimulating food. At the same time, oral acid-suppressing drugs, such as Loxac, are taken for acid-suppressing treatment. Patients also need to exercise and avoid direct intake of harmful gases in order to be cured gradually.