Compressor rotor structure and compressor

The utility model relates to a compressor rotor structure and a compressor, the compressor rotor structure comprises a rotating shaft, the rotating shaft is divided into a first-section shaft, a second-section shaft and a third-section shaft which are sequentially connected in the axial direction, the first-section shaft and the third-section shaft are respectively provided with at least two impellers, and the second-section shaft is provided with a damper. The damper is arranged on the second-section shaft connected between the first-section shaft and the third-section shaft, so that in the using process, when at least four impellers at the two ends of the rotating shaft do work in a rotating mode, the damper can effectively improve the overall supporting rigidity, and even if the weightof the two ends of the rotating shaft is heavy, the whole supporting rigidity can be effectively improved. And the fixed frequency of the compressor rotor structure is not too low. In other words, thefixed frequency of the co