Because of the natural anatomy of the human body, the sinuses have natural openings. For example, if a patient has a cold with snot, it may lead to the formation of fluid inside the sinuses, so when the patient cleans the nasal cavity with saline or some nasal flushing medication, it can make the patient’s sinuses appear to be filled with water, but if the patient’s sinus opening is well opened, this water or medication can be discharged outward by itself, and the fluid inside can be flushed out, which can effectively play a This is the reason why we have the patient have a nasal sinus. This is the main purpose of nasal and sinus irrigation. Patients are advised to avoid excessive force when rinsing, which can damage the mucous membrane of the patient’s nasal cavity and sometimes even lead to bleeding, and it is best to use it under the active guidance of a healthcare professional.