Thick nasal discharge with blood is considered to be caused by rhinitis, sinusitis and nasal-sinus malignant tumor. 1. Rhinitis: the inflammation violates the capillaries in the nasal cavity, leading to the rupture of some of the capillaries, thus forming the symptom of thick nasal discharge with blood. 2. Sinusitis: inflammatory disease of the mucous membrane of the sinuses, usually with nasal congestion, runny nose usually mucopurulent or purulent nasal discharge, loss of smell and local pain or headache symptoms. Due to acute or chronic congestion of the nasal mucosa, local mucosal blood vessel rupture, can lead to pus nasal discharge with blood symptoms. 3. Malignant tumor of nasal cavity and sinus: it will happen that one side of nasal secretion often carries blood or has a small amount of nosebleed, and at the same time, there will be pus, and there is a special odor in the nose. The symptoms of thick nasal discharge with blood, should go to the hospital in time to carry out relevant examinations, clear cause of the disease and then give targeted treatment.