Sodium chloride injection is available in different concentrations, and different concentrations are used for different types of rhinitis and conditions. Sodium chloride injection can be used to wash the nose, but it should be used in accordance with medical advice. 1. Sodium chloride injection, commonly used concentration is usually 0.9%, can be used to clean wounds, or used as a solvent. The use of sodium chloride solution to clean the nasal cavity is less irritating, and can effectively play a cleaning role, which is conducive to the discharge of nasal secretions. However, it should be noted that if the solution is opened to avoid more than 24 hours. 2. If for chronic sinusitis patients, or sinusitis patients after surgery, you can appropriately increase the concentration of rinsing solution, can be adjusted to about 2%. High concentration of rinsing solution in the cleaning at the same time is also conducive to the reduction of traumatic swelling. Patients are advised to clean the nasal cavity reasonably and avoid excessive cleaning. If the nasal secretion is excessive, causing nasal congestion and other discomforts, you should actively consult a doctor to clarify the cause and take effective treatment measures to avoid delaying the condition.