The dryness of the throat is considered to be related to a variety of factors, which may be related to physiological factors such as improper diet and dry air, as well as pathologic factors such as laryngitis and diabetes. 1. Physiological factors: (1) Improper diet: when the human body drinks less water, too much to eat some spicy and greasy stimulating, high-calorie food, can lead to a decrease in the water content of the mucous membrane of the throat, triggering the symptoms of dryness of the throat; (2) air dryness: when the human body for a long time in the air in a dry environment, because the body tissue cells within the loss of excessive water triggered by the physiological phenomenon of dry throat. 2. Pathological factors: (1) pharyngitis: pharyngitis during the onset of the pathogen infection caused by the inflammation of the pharyngeal mucosa stimulation can lead to mucous membrane blood circulation speed increase in the mucous membrane resulting in the loss of water faster, and at the same time can stimulate the pharyngeal sensitive nerves resulting in increased nerve sensitivity, triggered by the symptoms of dry throat; (2) Diabetes mellitus: During the onset of endocrine diseases such as diabetes mellitus, plasma osmolality will increase due to elevated blood glucose concentration. Plasma osmolality will produce osmotic diuresis during the period of elevated plasma osmolality, which will lead to excessive tissue cells in the water through the urine out of the body, which can also lead to a dry throat as well as thirst, drinking and other clinical manifestations. There are many reasons for the dryness of the human throat, and it is necessary to go to a regular hospital to confirm the diagnosis.