Dry mouth feeling after waking up in the middle of the night for the following reasons: 1, lifestyle: such patients have no physical problems, is due to lifestyle, generally seen in the room is relatively dry, such as dry weather in the north while open heating without humidification, may appear dry mouth. If you eat salty food or drink alcohol at night, such patients will wake up in the middle of the night with dry mouth, and the feeling of dry mouth can disappear after changing the above lifestyle; 2, disease: common snoring, diabetes, urolithiasis, such patients can have obvious dry mouth, diabetes and urolithiasis patients have symptoms of wanting to drink and urinate more in addition to dry mouth. Obese patients snoring is due to the loss of water from the oral mucosa due to open mouth breathing, so they will feel dryer. After snoring is treated and improved, the dry mouth feeling will also be significantly better. If diabetes mellitus and uremia are treated correctly and the condition is controlled more smoothly, the dry mouth symptom will also be relieved.