There are many causes of thirst, and the treatment varies from cause to cause. If the thirst is caused by a simple lack of water intake, the thirst can be improved by drinking fresh water or light salt water. If the thirst is caused by a chronic inflammatory disease, the doctor should provide targeted treatment according to the cause. If the dry mouth is caused by fire, it can be improved by drinking chrysanthemum tea. Diabetic patients can also have thirsty mouths. For thirst caused by diabetes, consider using insulin, metformin and other medications to control blood sugar and thus improve thirsty mouths. Thirst can also be caused by uremia, and for thirst caused by uremia, medication such as antidiuretic hormone should be considered. Paying attention to dietary habits in general and taking certain exercises to strengthen the body’s immunity can also help to improve thirsty mouth.