High-speed rotary drilling with diamond-impregnated bit is one of the main methods of deep hard rock core drilling. Although it is widely used in various fields， it still has some problems， such as unstable drilling performance and abnormal bit wear. The reason is that the understanding of the law of bit/rock interface and dynamic wear process is still not clear. In this paper， the current research status of mechanical response models of diamond-impregnated bits for rock breaking is reviewed， and the relationship between the bit wear mechanism and the rock breaking mode and drilling speed under different drilling parameters is summarized. The wear failure mechanism of diamond-impregnated bits can be summarized as the cycle process of two-body wear and three-body wear at the bit/rock interface. This paper introduces the research of the critical drilling procedure in the interval beyond the conventional speed. The exploration of the new procedure is of great significance to the development of the high speed drilling of diamond-impregnated bit.