We breathe through our nose every day, inhaling a lot of dust, bacteria, sulfur dioxide and other exhaust gases and viruses in the air. As the body’s first gateway to deal with the air, the nose is always subject to the invasion of dirty air. Although the mucous membrane of the nasal cavity has a certain filtering, cleaning role, but if you often wash the nose, you can remove the dry crust in the nasal cavity in time, will make the nasal cavity better play the filtering, cleaning function. The method of washing the nose is: 1, with the palm of warm water or warm saline, head down by the nose will be gently inhaled, and then blow out through the nose, repeated several times. 2.You can also hang the warm saline bottle high, connect the infuser tube, the mouth of the tube into the nasal cavity 2 ~ 3 cm, while rinsing and blowing out. Cold water nasal washing should be advocated all year round, especially in the morning when washing your face, wash your nose with cold water a few more times to improve the blood circulation of the nasal mucosa. 3, if you think these old-fashioned nasal washing methods are not good to operate, there is now a new physiological seawater nasal wash that can be used directly without preparation. Its composition is more scientific and more convenient to use. In addition, you should also correct bad habits such as digging your nostrils with your hands, plucking nasal hairs or cutting nasal hairs. Because damage to nasal hairs and nasal mucosa will not only affect the filtering function of the nose and cause bacterial infections in the nasal cavity, but may also cause diseases in the skull and ears.