The invention relates to the field of ship engineering, in particular to a law enforcement high-speed boat. The law enforcement high-speed boat is characterized in that: a broken step I, a broken step II and a broken step III, the lengths of which are gradually reduced, are sequentially arranged on the bottom sliding surface of a hull along the stem to the stern, wherein the front ends of the broken steps are arc-shaped and inclined backwards. During use, because the structure of the broken steps is adopted at the bottom of the hull, the wetted surface area can be effectively reduced; meanwhile, because arc-shaped and forwards inclined structures are adopted at the front ends of the broken steps, the air inlet quantity can be increased, and an air curtain is formed at the bottom of the hull to achieve the effect of reducing the sailing resistance and effectively improve the sailing speed; in addition, the scheme that the lengths are gradually reduced is adopted in the broken steps, so that the boat keeps a good power position during sailing and the sailing state of the boat is further improved; and the law enforcement high-speed boat has the remarkable advantages of low cost, reasonable structure, safety, reliability and the like.