The invention relates to a high-voltage transformer type electronic accelerator in the technical field of accelerators for irradiation processing. The high-voltage transformer type electronic accelerator comprises a steel drum combined part, a first infrared signal transmission device is mounted at the top of the steel drum combined part, a primary winding component is arranged in the steel drum combined part, a magnetic cone component is mounted on the upper portion of the primary winding component, a magnetic disc component is arranged on the lower portion of the primary coil component, a secondary winding component is concentrically arranged in the primary coil component, a high-voltage electrode component is mounted on the upper portion of the secondary coil component, an electronic gun power source and a second infrared signal transmission device are arranged in the high-voltage electrode component, the lower portion of the secondary coil component is mounted on the magnetic disc component through a support, an accelerating pipe component is concentrically arranged in the secondary winding component, the electronic gun component is mounted on the upper portion of the accelerating pipe component, and the lower portion of the accelerating pipe component is connected with a beam ejection device through an accelerating pipe base. The high-voltage transformer type electronic accelerator has the advantages of compact structure, high beam power, high electric energy conversion efficiency, stability and reliability in operating, low running cost, high production efficiency and the like.