The invention discloses an ultrahigh-conductivity leadless free-cutting copper alloy material, and a preparation method and application thereof. The material is characterized by comprising the following chemical components by weight: 0.10 to 0.30% of Te, 0.003 to 0.009% of P and 99.70 to 99.90% of Cu, wherein the total amount of impurities is less than 0.1%. The preparation method adopts melting, extruding and drawing technology and cooperatively uses a phosphorus-lithium composite deep deoxidation method; and the prepared has oxygen content of less than 20 ppm, reaching the level of oxygen-free copper TU1, and has electrical conductivity of greater than 95% IACS, obviously higher than C14500 conductivity standard (greater than 85% IACS). The material has excellent machinability, electrical conductivity and heat conductivity and resistance to corrosion and electrical ablation, and can be extensively applied to electronic and electrical connection devices, integrated circuit lead frames, welding high-grade gun nozzles, electromotors, switch components and the like with ultrahigh requirements on electrical conductivity.