Academician TONG Xiaolin believes that diarrhea can be divided into fulminant diarrhea and long-term diarrhea, "fulminant diarrhea is real, long-term diarrhea is deficiency", and the clinical manifestations are mostly abdominal pain or not. Diarrhea can be caused by body deficiency, or emotional obstruction, or food stagnation, or fatigue and injury. The pathogenesis is based on the spleen deficiency and dampness, and the small and large intestines are not solid as the standard. The spleen and stomach are abnormal in movement and transformation, gather and generate dampness, and diarrhea lasts for a long time. It can secret accumulation, distemper fullness, transform heat,and gather dampness. The treatment methods can be as follows: opening bitterness and reducing qi, clearing away heat and dampness, removing dampness and heat, warming yang and dispersing cold, and helping spleen and kidney. For a long time, it is easy to dissipate essence, so spleen deficiency diarrhea should be strengthened and dampness seeped,and the diarrhea should be stopped by astringent intestines. Commonly used raw coix seed, lotus seed, Euryale ferox three ingredients compatibility treatment. The common dosage in the prescription is 30-120 g for raw coix seed, 15-30 g for lotus seed and 15-45 g for Euryale ferox.