Sore throat and bloody nose may be caused by nasopharyngeal cancer, upper respiratory tract infection and tonsillitis. 1. Nasopharyngeal cancer: patients with nasopharyngeal cancer may have the symptoms of sore throat and bloody nose. 2. Upper respiratory tract infection: due to viral and bacterial infection, upper respiratory tract infection can lead to acute pharyngitis, acute inflammation of pharyngeal mucosa, submucosa and lymphatic tissues, resulting in sore throat; acute rhinitis with congested and swollen mucosa of nasal cavity, increased secretion, and frequent blowing of nose, which can lead to erosion of mucosa of nasal cavity, resulting in nosebleed. 3. Tonsillitis: caused by bacterial or viral infections, inflammation and redness of the tonsils can cause throat inflammation and pain. However, when there is an infection at the same time, there may also be a generalized fever, which will accelerate the rate of blood flow in the nasal mucosa, easily drying the nose and leading to nose bleeding. When the patient has a sore throat and nose bleeding, he should go to the regular hospital in time to find out the cause of the disease and be treated under the guidance of the doctor.