What causes a dry throat at night in the middle of the night?

Sleeping at night in the middle of the night dry throat, the main reason is to sleep at night with the mouth open or snoring, will unconsciously appear at night with the mouth open to breathe vigorously, after waking up there will be a dry mouth, dry and itchy throat performance, mainly because of the oral salivary secretion is low during sleep, and has been open the mouth so that the mucous membranes are no longer moist, appearing throat dryness. Some people eat too salty before going to bed at night, the night fluid secretion is insufficient, will lead to dry throat symptoms, wake up in the middle of the night this feeling will be more obvious.