The utility model discloses a one-time coupled vibration test device for an electronic current transformer. The test device comprises a control host, a converter, a vibration generator, a vibration transfer rod, a one-time guide rod, the electronic current transformer to-be-tested, a combination unit, a signal acquisition host and a support, wherein the control host is connected with the converter by a signal wire; the converter is connected with the vibration generator by a signal wire; and the vibration generator is located on the support, and used for transferring vibration to the one-time guide rod by the vibration transfer rod; and the signal acquisition host is connected with the combination unit to analyze a waveform signal. According to the device, the influence of the vibration of a circuit breaker on the electronic current transformer can be simulated, thus achieving a test purpose, and avoiding influences and breakages on the circuit breaker.