The bit has good cleaning effect, high cutting eficency and long PDC teeth gauge protection section due to the arbitrary and high density arrangement of the teeth in the crown outline shape. In addition, the TSP teeth are used for strenghthening of the gauge protection, thereby having rather high rater of penetration. Therefor, it can be used in the mud stone, clay stone, silt stone, non-consolidated sandstone, hydratable shale, non-hydraulic shale with low comressive strengh, and formation with medium abrasiveness.