Dry mouth fever is mostly seen in autoimmune disorders, endocrine level changes when the salivary glands are damaged, the volume of significant atrophy, the amount of secretory glands is greatly reduced, resulting in oral mucosal dryness, resulting in pain, especially common in menopausal women, also known as Schegelen syndrome, belonging to the autoimmune diseases. Oral examination reveals a lack of saliva lubrication on the mucosal surfaces of the lips, cheeks, and tongue, and widespread caries on most tooth surfaces, sometimes accompanied by dry eyes and rheumatoid arthritis. Patients need to drink water to deliver the medicine due to the lack of lubrication by oral fluids when chewing, otherwise they will have difficulty in swallowing, and they need to regulate immunity for the systemic condition.