The presence of dry throat in diabetes mellitus does not necessarily mean an aggravation of the disease, it may be related to diet, dry air, colds, etc. It is recommended to consult your doctor. Diabetes mellitus is a group of metabolic diseases characterized by chronic hyperglycemia caused by multiple etiological factors, which is due to defective insulin secretion and/or action. Typical symptoms of diabetes are “three more and one less”, i.e., polyuria, polydipsia, polyphagia and weight loss, which may be accompanied by itchy skin and other symptoms. Dry throat in diabetes mellitus may be one of the symptoms of the disease, due to the osmotic diuresis after the elevation of blood glucose can cause polyuria, followed by thirst and dry mouth, not necessarily a worsening of the disease. If the symptoms of dry throat continue to be unrelieved after lifestyle modification, it is important to consult a doctor to clarify the cause of the disease and treat it under the doctor’s guidance.