Professor CAI Genxing excels at treating pediatric diseases based on syndrome differentiation and treatment of the spleen and stomach. He holds that "stagnation" is an important etiology of pediatric diseases. "Stagnation" not only refers to food stagnation, but also includes pathological elements such as cold, heat (fire), dampness (phlegm), qi and blood stasis. He combines disease differentiation with syndrome differentiation, treats different diseases with the same therapy, and uses the method of invigorating spleen and promoting digestion to remove food retention to treat children's miscellaneous diseases of the five zang-organs, with marked efficacy. Five proven cases are attached for verification, including children with hidrosis syndrome, tic disorders, mesenteric lymphadenitis, adenoidal hypertrophy, and hematuria.