Dry mouth and nose may be caused by non-disease factors such as dietary stimulation, dry air, etc. It may also be related to dry rhinitis and diabetes, and there are different treatments for different reasons. If caused by disease, you need to take mucous membrane recovery drugs or hypoglycemic drugs for treatment.1. Dietary stimulation: If patients recently consume too much spicy and stimulating food or drink too little water, they may have dry mouth and nose, low fever, irritability and other symptoms. At this time, you can take some drinks to clear heat and dispel dryness, such as honeysuckle tea, chrysanthemum tea, etc. Symptoms usually disappear naturally after dietary improvement. In addition, the diet should pay attention to eat more vitamin-rich vegetables and fruits, drink more water, eat less spicy fried food, do not smoke and drink; 2, help mucous membrane recovery drugs: dry rhinitis patients can have dryness in the nose, nasal secretions reduced, nasal itching or foreign body feeling symptoms, help mucous membrane recovery drugs can help the nasal cavity mucous membrane recovery. Patients can take cod liver oil pills and vitamin B2 orally at this time to promote normal cell metabolism. Vitamin C and vitamin A can also be taken to protect the capillary walls and help the epithelium to recover. It is recommended to increase indoor humidity and apply humidifier appropriately. You can also do nasal massage to promote blood circulation of nasal mucosa and keep the nasal cavity moist; 3. Hypoglycemic drugs: diabetic patients can have symptoms of dry mouth and nose, thirsty drinking and hungry eating. They can be treated with oral sulfonylurea hypoglycemic drugs such as glibenclamide and glipizide, but sulfonylureas are prone to hypoglycemia, and should be used with caution by the elderly and those with liver and kidney insufficiency. Metformin and acarbose can also be applied to reduce postprandial hyperglycemia, treat the primary disease and relieve dry mouth and nose. Daily attention should be paid to limiting the intake of foods with high salt content, such as MSG, soy sauce, salt-dipped and other processed foods. Alcohol should be avoided to prevent ketoacidosis induced by drinking large amounts of alcohol. You can do aerobic exercises such as brisk walking, playing table tennis, etc.; 4. Other: If it is caused by rhinitis, you can take antibiotic drugs for treatment as prescribed by the doctor, such as roxithromycin, clarithromycin, cefdinir, etc. When the mouth and nose are dry, you should also pay attention to drink more water in appropriate amount to replenish the body moisture in time, when the environment is dry, you can use humidifier to improve indoor humidity, eat more fruits, nasal massage can also help prevent the symptoms of dry mouth and nose.