The invention discloses an electronic computer X-ray tomography spiral scanner. The electronic computer X-ray tomography spiral scanner comprises a scanning device, a scanning bed and a computer, wherein the scanning device comprises a shell, a scanning cavity and a scanning unit, the scanning unit comprises a slip ring, an X-ray generator, a detector and a data acquirer, and the X-ray generator and the detector are arranged on the slip ring； a scanning bed board is arranged above the scanning bed, a plurality of layers of protecting bed covers are arranged on the scanning bed board, accommodating cavities are formed in the two sides of the scanning bed, anti-radiation protective covers are arranged in the accommodating cavities, and a hydraulic lifting device is arranged at the lower end of the scanning bed. Due to the arrangement of the multiple layers of disposable bed covers, bed cover replacing time is reduced, and working efficiency is improved. Besides, by the adoption of the anti-radiation protective covers, a person being inspected can be effectively protected against redundant and unnecessary radion radiation； by the adoption of the hydraulic lifting device, the height of the scanning bed can be reduced, and the difficulty of scanning of patients who can not move freely can be reduced.
