The invention relates to the electricity stealing prevention technology field of an electric power system, relates to an electricity stealing prevention algorithm verification device, particularly relates to a high voltage supply high metering electricity stealing simulation and electricity stealing prevention algorithm verification platform and aims to solve a problem of lacking of a device for verifying the electricity stealing prevention algorithm. The platform comprises a program control current generator, a primary current electricity stealing simulation module, a first current transformer, a second current transformer, a program control voltage generator, a primary voltage electricity stealing simulation module, a first voltage transformer, a second voltage transformer, a secondary voltage electricity stealing simulation module, a three-phase three-wire intelligent meter, a secondary current electricity stealing simulation module, a computer and a display device. The platform isadvantaged in that the virtual work principle is employed to supply power for a high voltage supply high metering device, consumption energy is small, development of researches on the electricity stealing prevention algorithm is facilitated through open electricity stealing prevention algorithm verification, and a disadvantage of the electricity stealing prevention algorithm having no verificationplatform is solved.