This research is mainly designed to determine the effects of bionic units with different scales on the wear behavior of bionic impregnated diamond bits.Based on bionic theory,bionic impregnated diamond samples with self-regenerated non-smooth surface were designed and fabricated.The bionic samples with non-smooth surface had the same non-smooth ratio,while the bionic units on them have different scales.The non-smooth surface is constituted by a certain amount of concave units that could continuously maintain their shape and function during the whole working process.Non-smooth ratio refers to the percentage of the non-smooth area that accounts for the whole sample.Abrasive ratio tests were carried out to investigate its performance.The results proved that bionic samples function prominently in wear resistance and drilling performance.Meanwhile,microscopic imaging and analysis were applied to observe and reveal that selfregenerated units played an important role in improving the wear resistance and drilling performance of bionic samples.