The main prevention of nasal dryness is to improve the working and living environment, wear a mask when there is more dust, pay attention to ventilation and moisturizing. If you have conditions, you can use a humidifier at home to increase the humidity of the environment, and wearing a mask when you go out can keep the humidity of the nasal cavity. The disease is difficult to eradicate, but proper treatment can be clear can significantly reduce the symptoms. Pay attention to strengthening nutrition and vitamin supplementation. Intranasal drops of saline, compound peppermint oil, 5% glucose saline, etc. can be used several times a day to increase the moistness of the nasal mucosa. In the event of nasal dryness and crusting, the following points should be noted: 1. Replenish water in time to ensure the normal physiological needs of the body and to lay a good foundation for the nasal self-protection system to return to normal. 2, do not use your fingers to dig nostrils and crusts, hands bacteria, while forcibly digging out plus crusts not only can not clean the nasal cavity, but also tear, scratch the nasal mucosa, thus faster to trigger rhinitis. 3, there are conditions, it is best to carry out a saline nasal wash treatment, this method can effectively solve the dry nasal cavity and can have dried crusts softened, diluted and rinsed down without harming the nasal cavity. The water mist itself can immediately relieve the dry state, after using a period of time to restore the normal oscillation of nasal cilia and closed mucus normal secretion after the dry symptoms are gone, the effect on the dry nasal cavity and crust is very good.