If the mucous membrane of the patient’s throat is only a small amount of congestion, the patient will not spit blood in this case, and the patient will have an obvious foreign body sensation. However, if the congestion is very serious and the patient keeps coughing, the congested mucous membrane may rupture and the sputum will be filled with blood, but the amount of blood will not be very large, so the patient should not worry too much. You can also use golden lotus or fat sea in water and nebulized inhalation with the liquid. Try to eat a light diet, avoid salty and spicy food, do not smoke or drink alcohol, and do not stay up late.