The invention relates to a high-power V-shaped plasma torch. Each electrode assembly comprises an electrode, an electrode seat, a water sleeve, a gas ring, an insulating pad, a current-limiting rod and a conducting rod; a cathode arm consists of a cathode assembly and a plurality of electrode assemblies; and an anode arm consists of an anode assembly and a plurality of electrode assemblies, wherein the cathode arm and the anode arm form a certain angle and then form the V-shaped plasma torch with a jet mixing chamber, thereby improving the power of the plasma torch and forming stable electric arcs. The high-power V-shaped plasma torch has low energy consumption and convenient operation and can be applied to the fields of industries of petroleum cracking, refuse treatment, acetylene preparation from coal, ethylene, coal gasification, metal smelting, and the like.