Pale and mucousy mouth is most often seen in the beginning or remission of inflammation, while digestive disorders are more common, as well as in patients with endocrine disorders, vitamin and trace element zinc deficiency. In addition, a pale, tasteless mouth and a weakened or even absent sense of taste are also among the characteristics of cancer patients. As well as the possibility of a greasy diet, spicy stimulation and other causes, as well as the effects of digestive system diseases. Differential diagnosis of light and sticky mouth: 1. Bitter mouth is mostly caused by heat in the liver and gallbladder. Those with bitter mouth often also have headache, dizziness, thin yellow coating, and stringy pulse, etc. The treatment is to clear the heat in the liver and gallbladder. The formula is Gentian and Liver Dissipation Soup: 15 grams of gentian herb, 10 grams each of Chai Hu, Ze Xie, Che Qian Zi, Moutong, Angelica and Gardenia, 12 grams each of Sheng Di and Huang Qin, and 8 grams of licorice. Decoction, 1 dose daily, 2 times a day. 2, sweet mouth, also known as “sweet mouth”, mostly due to the malfunction of the spleen and stomach. Clinically, it is divided into spleen and stomach heat steam sweet mouth and spleen and stomach gas deficiency sweet mouth. The former is mostly due to excessive consumption of spicy and thick-tasting products, breeding internal heat or external heat accumulation in the spleen and stomach. The symptoms are sweet mouth and thirst, watery, easy to eat, or sores on the lips and tongue, dry stools, red tongue with dry coating, and strong pulse. The treatment should be to clear the spleen and remove fire. The remedy is Diarrhea Huang San: 15 grams of patchouli, 10 grams of gardenia, gypsum, 8 grams of licorice, 2 grams of wind; or Clear Stomach San: 10 grams of Huang Lian, Angelica, Sheng Ma, 12 grams of raw earth and Dan Pi. Decoction with water, 1 dose daily, 2 times a day. The latter is mostly caused by old age or prolonged illness injuring the spleen and stomach, resulting in injury to both qi and yin, internal growth of deficiency heat, and burning of the spleen with fluid. The symptoms are sweet and dry mouth, shortness of breath and body fatigue, lack of thinking about eating and drinking, distention of the abdomen and stomach, and dry and sometimes soft stools. The treatment is to benefit Qi, strengthen the spleen, harmonize the stomach and nourish Yin. The formula is based on Yigang Tang and Sijunzi Tang with addition and subtraction: 15 grams of Sha Shen, 10 grams each of Mai Dong, Yu Zhu, Bai Zhu and Fu Ling, 12 grams each of Sheng Di and Huo Xiang, 8 grams each of Sha Ren and Roasted Licorice. Decoction with water, 1 dose daily, 2 times a day. 3, salty mouth mostly due to kidney deficiency. If accompanied by soreness and weakness of the waist and knees, dizziness and tinnitus, five heartburn, night sweating and spermatorrhea, less coating, thin pulse and other symptoms, is a kidney yin deficiency, false fire on the inflammation, that is, “kidney yin deficiency salty mouth”. The treatment is to tonify kidney yin, nourish yin and lower fire. The formula is Zhi Bai Di Huang Tang plus or minus: Zhi Mu, Huang Bai, Shan Yao, Dan Pi, Fu Ling 10 grams each, Shu Di 15 grams, Cornu Cervi Pantotrichum, Ze Xie, Fen Zi 12 grams, cinnamon 8 grams. Decoction with water, 1 dose daily, 2 times daily. 4, mouth acidity in the mouth, but there is no acid spitting out. Mostly due to heat of liver and gall bladder multiplying the spleen. The sour taste in the mouth is often accompanied by chest tightness and pain, nausea, abdominal distension after eating, thin yellow tongue coating, and stringent pulse. The treatment should be to remove the liver and harmonize the stomach. The formula is Zuo Jin Wan and Six Jun Zi Tang with addition and subtraction: Huang Lian, Wu Zhu Yu, Fu Ling and Bai Zhu 10 grams each, Ginseng and Licorice 8 grams each, Chen Pi 15 grams. Take 2 times a day, 1 dose a day with water decoction. 5, halitosis breath out of the mouth smells foul, self-conscious or for others to smell. Generally there are three cases: 1. Stomach fire steam: red tongue or tongue sores, or gum swelling and pain, bad breath, and thirst for cold drinks, yellow urine and dry, yellow moss and other symptoms. The treatment is to clear the stomach fire. The formula is San Huang Diarrhea Heart Soup: 10 grams each of Rhubarb and Scutellaria, 5 grams of Huang Lian. Decoction with water, 1 dose daily, 2 times daily. 2. Gastrointestinal food accumulation: bad breath such as sour rot, or with raw food taste, accompanied by distention and fullness of the abdomen, not thinking about eating, belching and rotting, tongue coating greasy and other symptoms of food injury. The treatment is to eliminate food and stagnation. It can be swallowed with Chinese medicine Baohe Wan or Shanzha Wan. It can be taken twice a day, 9 grams each time.3. Usually do not pay attention to oral hygiene, suffering from dental caries or oral inflammation. It can be taken with 10 grams of scutellaria, patchouli, gypsum and raw earth, 4 grams of licorice, and gargle with decoction.