Nasal voice is mainly caused by blockage of nasal cavity, such as cold and flu. However, prolonged rhinorrhea in daily life is mainly caused by rhinitis, allergic rhinitis, deviated nasal septum, nasal polyps, nasal papilloma, nasopharyngitis, nasal swelling, etc. Therefore, in case of prolonged rhinorrhea, it is necessary to go to the hospital for rhinoscopy in time to have a checkup. Therefore, in the case of prolonged heavy nasal sound, it is necessary to go to the hospital in time for rhinoscopy examination to exclude the presence of the above corresponding diseases. In the clinic of the disease caused by heavy nasal sound, see sinusitis, sinusitis is mainly the human body’s paranasal sinuses, such as maxillary sinus, sieve sinus, frontal sinus and pterygoid sinus inflammation, blockage of sinus mouth, causing resonance to produce obstacles, the need for electronic rhinoscopy to check the presence of sinus blockage, such as sinus mouth blockage, the need for general anesthesia in the sinus endoscopy sinus open surgery.