Abstract: A new type of impregnated diamond bionics bit is developed by applying the bionics non-smooth theory to the bit design. Its drilling efficiency increases 30% to 80% compared with the ordinary bits. The size of rock dust particles crushed by bionics bits is larger than that broken by ordinary bits. The bionic non-smooth surface increases the specific pressure of the bit’s crown and also ameliorates the cooling conditions between the bit and rock. So it improves the drilling efficiency of diamond bits.

Key words: diamond bit, bionics, impregnated, rock fragmentation mechanism, non-smooth