Generally speaking, blood in nasal mucosa is caused by chronic inflammatory stimulation of the nasal cavity. Secondly, acute inflammation of the nasal cavity. For example, acute sinusitis can also occur when there is blood in the pus. Third, the occupying lesions of the nasal cavity, such as papilloma or other malignant tumors, can also cause this situation. Generally speaking, inflammation can be treated with symptomatic antibiotics. Then the nasal cavity can be treated with vasoconstrictive drugs, and then there are drugs to promote the use of secretion discharge. If there is serious mucosal damage, you can use mucosal lubricating drugs, such as peppermint paraffin oil to improve the symptoms can be gradually relieved. If it is caused by nasal tumor, the situation can only be improved by means of sinus endoscopic surgery.