There is no simple medicine to treat dry mouth. We should clarify what causes dry mouth, and then use relevant medicines for treatment according to the cause. There are many causes of dry mouth (e.g., pathologic causes, improper diet, etc.), and it is recommended to go to the hospital for an examination to clarify the cause of the disease and treat the cause. Some people suffer from dry mouth because of discomfort caused by diseases. For example, diabetic people urinate more, the water contained in the body is insufficient, caused by dry mouth. It is recommended that you take appropriate water supplements in your daily life. If necessary, take hypoglycemic drugs (such as acarbose, etc.) under the guidance of a doctor to control blood sugar. In addition, it should be noted that when people have dry mouth accompanied by localized enlargement of the parotid gland, it may be oral dryness syndrome. At present, there is no good treatment for this disease, only symptomatic treatment (such as systemic damage people under the guidance of the doctor to use methylprednisolone and other hormone drugs, etc.). When people eat too much salty, spicy and other stimulating foods, dry mouth symptoms can also occur. It is recommended to eat a reasonable diet, eat more vegetables and fruits and other foods, and avoid spicy, greasy and other stimulating foods. Medications should be used as prescribed by a doctor.