Dry mouth and bitter phlegm may be liver fire, improper diet, etc. In daily life, you can eat more vegetables and fruits and other vitamin-rich food, drink more water, keep a certain amount of exercise every day. 1. Excessive liver fire; Liver disorder, bile secretion abnormality, bad breath, manifested as liver fire, wake up in the morning with dry mouth and bitter, patients can take dande gardenia free pill, gentian diarrhea liver pill to relieve this symptom. 2. Improper diet: should improve the diet structure, do chew slowly, eat eight minutes full, in addition, eat too much spicy stimulating food, overeating, greasy and so on these will lead to the patient to appear this disease, suggest to quit smoking and quitting alcohol, keep light diet, the patient can take Dan gardenia free pill, gentian diarrhea liver pill to relieve this symptom. Dry mouth and bitter sputum may have other reasons, if you are not feeling well, it is recommended to consult a hospital in a timely manner, under the guidance of a professional physician for treatment, so as not to delay the condition.