Dry mouth, bitter breath and bad breath are mainly considered to be caused by dampness and heat in the liver and gallbladder (dampness and heat accumulated in the liver and gallbladder), exuberant fire in the stomach (exuberant fire and heat in the stomach), and lumbar pain may be caused by kidney deficiency and cold condensation, which need to be diagnosed and treated under the guidance of a doctor. 1. Damp-heat of the liver and gallbladder: it means that dampness is stagnant in the liver and gallbladder, and for a long time, it turns into fire, forming damp-heat, resulting in the malfunctioning of the liver and gallbladder, and the appearance of a dry mouth, bitter mouth, and halitosis. In addition to the above symptoms, there may also be two ribs coercive pain (coercive pain), yellow urine, yellow tongue coating and other manifestations. The principle of treatment is to clear the liver and gallbladder, remove heat and dampness and tonify the kidneys, soothe the sleep, such as anti-inflammatory bile tablets, gentian liver pills and other drugs. 2. Exuberant Stomach Fire: It refers to the manifestation of strong appetite, good hunger (eating a lot and still easy to be hungry), bad breath, thirst, like to eat cold drinks, yellow urine, dry stools, yellow tongue coating and number of veins, and so on. Treatment to clear stomach fire, nourish stomach yin as the main, and at the same time to tonify the kidney, sleep, can use clear stomach powder, gardenia gold flower pill and so on. 3. Kidney deficiency: can be divided into kidney yin deficiency, kidney yang deficiency, etc., appearing back pain, lumbago, leg weakness, five heart heat (two hearts and two feet heart heat, and consciously heart and chest heat), fear of cold, night sweating (after going to sleep sweating abnormally, wake up sweating stops), etc., need to choose the right medicine according to different types of evidence, such as the Golden Chamber Kidney qi pills, six flavors of the earth pill and so on. 4. Cold condensation: When the waist is cooled, the cold can be stagnated in the meridians and collaterals, and if it does not pass through, it will cause pain, so you can apply hot compresses and physiotherapy, or take Gan, Jiang, Ling, and Jiao Soup. Occasionally, you can observe on your own, if there is no relief for a long time, you need to go to the Chinese medicine department in time for Chinese medicine adjustment, do not delay the condition.