The invention discloses a high-performance underwater welding cable, comprising a cable core, wherein the cable core is twisted by two pairs of air pipes and a plurality of Kevlar filling ropes with different sizes; A waterproof inner protective layer is wrapped around the cable core, An inn conductor layer is arranged outside the waterproof inner protective layer, the inner conductor layer is first wrapped around the buffer type semiconducting resistance hose and then wrapped around the waterproof inner protective layer, the outer conductor layer is arranged outside the waterproof inner protective layer, the outer conductor layer is wrapped around the buffer type semiconducting resistance hose again, and the waterproof outer protective layer is squeezed outside the buffer type semiconducting resistance hose. The cable has high strength, good toughness, wear resistance, cold resistance, oil resistance, water resistance, aging resistance, weather resistance, high performance, but also has high water permeability, moisture permeability, wind resistance, antibacterial, mould resistance, anti-ultraviolet and energy release and many other excellent functions.