The utility model discloses a transformer transformation ratio intelligence measuring equipment, including the controller, the data transmission of the remote terminal unit collection at transformer both ends gives the controller, the controller is communicated respectively with regulation and control center and station accuse center, the synchronized clock module is the controller time service, constant voltage power supply is synchronized clock module and controller power supply, the calculation of transformer transformation ratio is accomplished to the controller according to the data of remote terminal unit collection. The utility model discloses a transformer transformation ratio can accurately be judged according to transformer both ends RTU metric data fast to intelligence transformer transformation ratio measuring equipment, GPS big dipper synchronization signal triggers the transformation ratio and calculates, has guaranteed data time accuracy, the correct execution of dispatch instruction is guaranteed to real -time supervision transformer transformation ratio, report to the police when the transformation ratio is inconsistent, in time point out the operation personnel, it is intelligent to improve substation operation, is favorable to the security of system steady operation.