Liver fire and stomach fire can both cause bitter breath and bad breath, the difference is that liver fire has emotional symptoms and stomach fire does not. 1. If bitter breath and halitosis are accompanied by symptoms such as elimination of grain and good hunger (eating a lot and still easy to be hungry), burning pain in the stomach and epigastrium, nausea and acid reflux, swollen and painful gums, thirst without quenching, and short and yellowish urine, it is caused by blazing fire of the stomach and loss of stomach harmony and descending (obstruction of the function of gastric descending and passing), and the treatment can be used to clear up the stomach and eliminate the fire of the stomach by using clearing the stomach powder. 2. If there is bitter mouth and bad breath, accompanied by emotional symptoms of impatience and irritability, as well as head swelling and tinnitus, eye and eye swelling and pain, and burning pain in the abdomen and ribs, it is due to exuberant liver fire, liver loss of detachment and drainage (the liver’s function of detachment and drainage is abnormal), and the treatment can be used to clear the liver fire by using Longguan Diarrhea Liver Soup. Those who have the above symptoms should consult a doctor in time and be treated under the guidance of a professional doctor to avoid delaying the condition.