New bits with non-planar face PDC cutters, including shallow recessed cutter、Stinger central conical element、StingBlade element、AxeBlade ridged diamond element and StayCool diamond element, have gradually been introduced in oil and gas drilling in recent years. Those bits could drill some hard and abrasive formations with propriety ROP and durability. To meet the demands for powerful removal of cuttings and excellent steering for horizontal drilling, especially in shale well, ONXY Ⅱ Spear PDC bits、Seeker Directional PDC bits、CounterForce PDC bits、Speed Double Diameter PDC bits etc. Launched by International famous companies for oil and gas drilling worldwide at present. Newly developed Defyer DPA drillable casing bit and CuttPro cutter shearing caps for PDC are also mentioned in the paper. Summary(total 4 articles): (1)PDC bits should be continued deeply developed to meet requirements for oil and gas field perfectly. (2)Hybridization of bits is a trend in oil and gas well drilling. About 7 types of hybrid bits are introduced in the paper. It is just a beginning. More category’s hybrid bits would be developed and applied in oil and gas drilling in future years. (3)Some super-hard materials, which could be better used as cutters for well bits compared with diamond, might be discovered or synthesized later. (4)The bits enterprises should be reorganized and grown up, as well as technical innovations for drill bits must be strengthened in China.