Dry mouth and bitter mouth at night is mostly related to the heart, liver, gallbladder, stomach and other internal organs of fire and heat exuberance, generally can be treated by taking Huanglian Shangqing tablets, gentian liver pills, Huanglian stomach pills and other proprietary Chinese medicines. 1. Huanglian Shangqing tablet: including Huanglian, gardenia, forsythia and other drugs, has dispersing wind and clearing heat, diarrhea and pain relief effect. It is used for dizziness, red eyes, toothache, mouth and tongue sores, sore throat and other diseases caused by wind-heat attacking upward and lung and stomach heat (the heat of lung and stomach is very heavy). The adverse reactions of this product are not clear. It is contraindicated for pregnant women, and for those with deficiency of spleen and stomach (weak and cold spleen and stomach). Avoid spicy and stimulating food during the period of taking the medicine, and should not be taken with warm tonic proprietary Chinese medicines. 2. Longdian Diarrhea Liver Pill: Containing gentian, Chaihu, Scutellaria baicalensis and other traditional Chinese medicines, Longdian Diarrhea Liver Pill is effective in clearing the liver and gallbladder, and relieving dampness-heat. It can be used to treat dizziness, red eyes, tinnitus, deafness, ear pain, dystocia (pain in the area of the ribs and the abdomen), bitter taste in the mouth and other conditions caused by damp-heat in the liver and gallbladder (damp-heat evils accumulated in the liver and gallbladder). Adverse reactions and contraindications to this drug are not known. Use with caution in pregnant women, the elderly and infirm, and those with loose stools. Avoid spicy and stimulating food during the period of taking the medicine, and avoid taking tonic Chinese medicine together. 3.Huanglian stomach pill: contains Huanglian, gardenia, forsythia, rhubarb and other traditional Chinese medicines, has the effect of clearing stomach, fire. It is used for the treatment of mouth and tongue sores, swollen and painful gums, stomach fever and toothache and other diseases. Its adverse reactions are not clear. It is contraindicated for pregnant women. Avoid smoking, alcohol and spicy, greasy food. Traditional Chinese medicine emphasizes evidence-based treatment, so it should be used under the guidance of a doctor, and should not be taken on its own, so as not to bring harm.