Rotor structure of high-speed motor

The utility model provides a rotor structure of a high-speed motor, which comprises a rotating shaft, a rotor punching sheet sleeved on the rotating shaft, cast aluminum end rings arranged at the two ends of the rotor punching sheet, a balance disc sleeved on the rotating shaft, a shaft hole arranged at the center of the balance disc, an arc-shaped moving groove arranged on the balance disc, and an arc-shaped groove arranged on the arc-shaped moving groove. The scale is arranged below the arc-shaped moving groove, one end of the adjusting strip is arranged on the edge of the shaft hole in a sleeved mode, the fixing screw hole is formed in one end of the adjusting strip, and the installation groove is formed in the adjusting strip and used for fixing the balance block. As the balance discs are arranged at the two ends of the rotor punching sheet, cast aluminum fan blades and balance columns are removed, the situation that the balance columns fall off when the motor rotates at a high speed is avoided, and the m