Chronic sinusitis with blood in the nasal mucus can be caused by inflammatory stimulation, blowing the nose with force, and may also be caused by nasal – sinus tumors. It is recommended that patients go to the hospital in time for examination, standardized treatment under the guidance of the doctor, do not self-medication. Chronic sinusitis is more serious patients may cause bilateral nasal congestion, at the same time, there will be thick yellow nasal secretion, also known as yellow nasal mucus, at this time the patient if blowing the nose, will lead to nasal mucosal congestion and edema, which will further lead to nasal mucosal rupture caused by bleeding. In addition, sinusitis long-term stimulation of the nasal mucosa, can also lead to nasal mucosal capillary congestion and expansion, this time the capillaries will become fragile because of the stimulation of inflammation, thus bleeding, but the amount of bleeding is generally not large, causing the symptom of nasal discharge with blood. Hormonal nasal sprays can be used to reduce anti-inflammatory swelling, relieve the swelling of the nasal mucosa, as well as the symptoms of nasal congestion, and oral treatment with appropriate drugs. Sinus tumor: benign and malignant tumors of the nasal cavity and sinuses, the main symptoms are often manifested as progressive nasal congestion and repeated nosebleeds. Chronic sinusitis with blood in the nasal mucus, it is recommended to consult a doctor in time to identify the cause, and follow the doctor’s instructions for treatment.