The academic thought and unique experience of professor XIONG Ji-bo on constipation were discussed from the main symptoms, key points of syndrome differentiation, personal experience. Professor XIONG pointed out that constipation had great differences between the excess pattern and the deficiency pattern. The excessive constipation had three types including heat constipation, qi constipation and cold constipation. The deficient constipation had four types: qi deficiency, blood deficiency, yin deficiency and yang deficiency. Professor XIONG's ...