Thick and greasy tongue coating and bad breath are considered to be stomach fire or liver fire. If it is accompanied by stomach distension, stomach pain, belching, acid reflux, constipation and other symptoms, stomach heat is considered. Therefore, the main treatment is to clear the heat and fire, you can use the Chinese medicine Huang Lian Qing Stomach Pill or Huo Xiang Qing Stomach Capsule for treatment. If it is accompanied by irritability, easy anger, burning pain and fullness in both sides, bitter mouth, dry mouth and poor sleep at night, it is considered liver fire. The main treatment is to clear the liver fire, you can use the gentian diarrhea liver pill or add flavor prodigy pill to regulate. In addition, daily life should also pay attention to adjust the diet structure, do not eat spicy, stimulating, fatty, sweet and greasy food, to avoid aggravating the symptoms of damp heat in the body.