In this paper, the semi-ductile regime grinding mechanism by creep feed method is analysed. A new fracture ratio is defined to measure the effect of semi-ductile regime grinding. The experimental method and the experimental equipment are presented. The experimental results are analysed and compared. The experimental results show that the semi-ductile regime grinding of hard-brittle material can be carried out in a universal grinding machine tool, and the grinding effect can be improved remarkably by the creep feed method.