Nose washing must be done with a nasal rinse solution formulated with special nasal wash salts and a special nasal washer, using pressure to instill the rinse solution into the nasal cavity for rinsing. When rinsing the nose, patients are generally advised to lower their heads slightly and place the head of the rinser in the position of the nostrils, not too deep so as not to damage the internal structure, gently squeeze the rinser with your hand to rinse the nasal vestibule, and then rinse the nasal cavity, filling the rinsing liquid through the nostrils on one side, and discharging it out of the other side of the nostrils, or nasopharynx or oropharynx. During the process of rinsing, open your mouth and breathe through it, not through your nose, so as not to suck the water into the trachea and lungs, resulting in asphyxiation, pay attention to the rinsing can not be too hard, and do not blow your nose, and the nasal washers must be replaced for a fixed period of cleanliness, so as to avoid causing secondary infection. After cleaning the nasal cavity, if discomfort occurs, it is recommended to seek medical treatment in a timely manner.