I believe that the understanding of Han Xia Diarrhea Heart Soup should be analyzed from the function of the spleen and stomach. Although the spleen and stomach live together in the central state, endowed with the nature of the earth, but their duties are different, the stomach is the main intake and the main descending turbidity, the spleen is the main transport and clear, the stomach likes wet, like the taste of obscenity and evil dry, the spleen likes dry, like the taste of aroma and evil wet, the two nourishing, dry and wet together, lifting and lowering each other, and especially lifting the most important. Suwen – six micro-intentional great theory” said: “lift rest, then the gas stand alone dangerous”, “non-lift is not to grow and collect”. The spleen and stomach is not only the essence of the latter, but also because of its specific location, can lead up and down, mediating which is called the pivot of qi lift. Therefore, the “source of medical sage heart” proposed: “the spleen rises, the liver and kidney also rise, so the liver wood is not depressed, the stomach descends, the heart and lungs also descend, so the gold and fire are not stagnant, in order to be good at transporting Qi”. This shows the important role of the pivot of the spleen and stomach in regulating the qi of the whole body. The spleen and stomach qi is deficient, its power to raise the clear and lower the turbid must be reduced, the clear qi does not rise, the turbid yin does not descend, so that the deficiency of cold and damp heat, phlegm and other endogenous pathological products or external evil such as sun and shaoyang heat to take advantage of the deficiency in the heart, blocking the qi flow and therefore for the lump. Clear yang and turbid yin reversal, so the upper and vomit, the lower and intestinal thunder and diarrhea. The main purpose of Hanxia diarrhea is to diarrhea the heart, the “heart” is the stomach, this is not controversial. The main purpose of diarrhea of the heart is to “diarrhea” the evil under the heart and “eliminate” the lumps under the heart. The first thing is to harmonize the stomach, the stomach qi is lowered then the spleen qi is born. The bitterness enters the stomach, lowering the rebellious and stomach; the pungency enters the spleen, dispersing the knots and eliminating the lumps. The ministerial medicine is Scutellaria baicalensis, Huang Lian and Gan Jiang, Scutellaria baicalensis bitter cold to clear the stomach, Gan Jiang pungent heat to warm the middle to disperse the cold to eliminate lumps and transport the spleen, cold and heat together, pungent open bitter down, help the stomach to lower the spleen. The spleen and stomach that and, again with ginseng jujube licorice supplement spleen qi, so that the good offices of the state powerful, ginseng jujube sweet warm can prevent scutellaria Huanglian bitter cold injury Yang, but also to restrain the half summer, dry ginger pungent heat injury Yin, as an adjuvant. The roasted licorice tonifies the spleen and the middle, and harmonizes all the medicines as a make up medicine. It is more effective to add aromatic products such as pelargonium and patchouli to Han Xia Diarrhea Heart Soup. Han Xia Diarrhea Heart Soup can be used in the following cases: 1. Biased towards damp-heat: with yellow moss, bitter mouth, noisy and acid swallowing as the main clinical features. 2, biased towards cold and damp: white coating, fear of cold, abdominal pain and downward diarrhea as the main clinical features. 3, stomach heat and spleen cold: clinical evidence of stomach heat with yellow coating, bitter mouth and acid swallowing, and evidence of spleen cold with abdominal pain, downward diarrhea and fear of cold. 4, phlegm and gas gangrene: the evidence is seen in restaurants or drinkers suffering from subcardiac gangrene, accompanied by nausea and vomiting, loose stools, white and greasy tongue coating, slippery pulse and other symptoms. Clinically, the stomach and epigastric gangrene is predominant, and it is not possible to identify hot and cold. I often use the addition and subtraction of Hexia Diarrhea Heart Soup to treat gastric cancer, adding gecko, centipede, chicken internal gold, vine root and fried white atractylodes on the basis of the original formula; adding angelica and white peony in case of liver metastasis; adding cat’s claw herb in case of lymph node metastasis. It has good clinical effect. In addition, licorice diarrhea of the heart is good for treating diarrhea caused by chemotherapy; ginger diarrhea of the heart is good for treating the fullness under the heart caused by water-heat interconnection, etc., which is often used in tumor treatment.