Cleaning the nasal cavity with saline is generally recommended 2-3 times a day, and at present, the more commonly used is the nasal rinser for rinsing, or you can choose to prepare the saline for spray rinsing. If a nasal rinser is used, the relative rinsing effect will be better and the rinsing power will be greater, but the operation is not very convenient. If you spray with prepared saline, the rinsing power is smaller, but the operation is more convenient. Specific therapeutic effect of individual differences, for most patients with rhinitis or sinusitis, nasal irrigation can improve nasal ventilation, reduce the symptoms of runny nose, but also reduce nasal mucosal edema. If the inflammatory reaction is heavy, the effect of simple rinsing is not good, but also need to be combined with oral medication, nasal spray medication, and need to be followed up regularly to observe the recovery of the condition.