The utility model discloses a high-speed ball screw pair which comprises a lead screw and a nut. The lead screw and the nut are matched with each other, balls are arranged between the nut and the lead screw, an inverter is arranged on the nut and comprises inverter grooves and a ball guide tube, the inverter grooves are positioned at two ends of the nut, and the ball guide tube is connected with the inverter grooves. The ball guide tube comprises a linear channel, two ends of the linear channel are connected with arc channels, and a guiding lug is arranged at an end of each arc channel. The two arc channels connected with the linear channel are positioned on different planes. The center lines of the guiding lugs are tangent with a spiral line of the ball screw pair. The phenomenon that the balls are collided repeatedly when passing through the inverter to cause noise, generate heat and the like is effectively avoided; heat energy generated during rotation can be dissipated well, and temperature rise of the total ball screw pair is greatly reduced; and loading and unloading can be realized step by step by the ball screw pair in the structural form when the balls enter and exit from the ball guide tube, and high-speed movement of the ball screw pair is realized beneficially.