There are many causes of dry mouth, which need to be identified for symptomatic treatment. 1, Yin deficiency fire evidence, appearing dry mouth, thirst, five hearts, etc., can be taken orally Zhi Bai Di Huang Wan. 2, liver and gall bladder damp heat evidence, appearing bitter mouth, dry mouth, mouth sticky, irritable and irritable, chest distension, oral gentian diarrhea liver pill, Dan Jia Yi Yao Wan. 3, heart fire evidence, heart trouble, dry mouth, panic, oral Tian Wang Tonic Heart Dan. 4, diabetes, appearing The thirst for more drinks, weakness around the body, thinning, by controlling the diet, increase exercise, while taking oral hypoglycemic drugs and insulin injection treatment. 5, in addition to tuberculosis oral antipsychotic, hypertensive, diuretic and other drugs can also lead to dry mouth.