1.I have used the nasal endoscope at each follow-up visit, do I still need to use my own nasal rinse at home? Why? Nasal rinsing is necessary. The purpose is to use water flushing to remove blood clots and secretions through mild physical external force, so that the mucous membrane of the nasal cavity and sinuses can recover its own cilia function and perform its function of foreign body removal. 2.What kind of water is better to rinse with? Why? Can patients prepare their own rinsing solution? Is there a requirement for water temperature? How many milliliters of water should be used each time? Physiological saline is better because it is similar to the internal environment of the nasal cavity. However, the concentration should not be too high and the PH value is also required, as inappropriate rinse solution may damage the function of the nasal mucosa. The water temperature of 35-4°C is suitable, too cold or too hot is not good. The amount of water used each time is several hundred milliliters, which can vary according to the amount of nasal secretions and the severity of the lesions, as well as the different stages of treatment. Due to the limited self-cleaning ability of the nasal cilia system and the reduced function of the diseased nasal mucosa, nasal foreign bodies cannot be removed effectively in time. Anyway, the purpose of rinsing is mainly to remove blood clots, secretions and scabs from the nasal cavity to reach the present. 3.How does the cleaning work? How many times a day do I rinse? The operation of rinsing is based on the instructions of the rinse device. When rinsing, lower your head slightly and emphasize that the rinsing strength is moderate. The rinse solution can flow out from the mouth or the opposite nasal cavity, and children under 5 years old are less cooperative. Once or several times a day, depending on the patient’s symptoms and rinsing efficiency, usually 2-3 times is easier to adhere to. 4.Does the patient need to pay attention to anything else when rinsing? The direction of water flow for rinsing should be roughly from the nostril towards the lower part of the ear, too much force will lose the eustachian tube. It is better to rinse and press the rinse by yourself, so that you can control the strength and direction.