Prof. CAI Gan is an academic leader in TCM treatment of the spleen and stomach disease. He insisted that liver depression, spleen deficiency and poor nourishment of the intestines are the core of pathogenesis for chronic constipation. Therefore he often treats the disease by strengthening the spleen, relieving the depressed liver, nourishing yin and moistening the intestines. Meanwhile he attaches great importance to syndrome differentiation and comprehensive regulation and treatment. As a result, good therapeutic effects are often achieved. The authors summarized his ways for treating chronic constipation with the following 10 methods, which are introduced below.