Abstract: This paper summarizes professor SHAN Zhaowei's experience in treating chronic diarrhea. He believes that the spleen deficiency and exuberant phlegm is the root， while dampness-heat， static blood and accumulated food is the branch. The disease is in the spleen and stomach， involving in liver and kidney. According to the characteristics of diarrhea to identify the asthenia and sthenia， cold and heat， viscera of spleen， liver， kidney and flexible combination of prescriptions. Meanwhile professer SHAN is good at treating chronic diarrhea by using wind medicine and combining warm medicine with cold medicine. When taking care of other pathological factors， it is taken into account the methods of digestion， invigorating blood and resolving stasis. Pay attention to tongue diagnosis and tongue syndrome.