To treat dry mouth and bitter mouth, you can massage Manxi, Yanglingquan, Zhangmen and other acupoints, and the specific efficacy varies from person to person. According to traditional Chinese medicine, dry mouth and bitter mouth are mostly related to dampness and heat of the liver and gallbladder (dampness and heat trapped in the liver and gallbladder) and disharmony of the liver and stomach (disharmony of the liver and stomach). Damp-heat in the liver and gallbladder or disharmony between the liver and stomach will cause the fire of the liver and gallbladder to follow the meridians and go upward or the liver qi to go upward, which will burn the fluid or cause the bile to overflow, resulting in symptoms such as dry mouth and bitter mouth. Manxi and Yanglingquan are both points of the gallbladder meridian. Manxi has the effect of draining the fire of the liver and gallbladder, while Yanglingquan has the effect of clearing heat and resolving dampness, dredging the liver and inducing bile (regulating the operation of the liver and gallbladder qi), and the two of them together are useful for the dryness and bitterness of the mouth caused by the dampness and heat of the liver and gallbladder. Zhangmen is an acupoint of the liver meridian, which has the effects of dredging the liver and strengthening the spleen (regulating the operation of liver qi and strengthening the spleen) and regulating qi and dispersing lumps (dispersing lumps by regulating the operation of qi), and is effective in treating dryness of mouth and bitterness caused by disharmony between the liver and the stomach. If patients suffer from dry mouth and bitterness, they should go to the hospital in time and be treated under the guidance of the doctor to avoid delaying the condition and adverse consequences.