The invention discloses a method for detecting an additional dynamic component of a Rogowski coil electronic current transformer. The Rogowski coil electronic current transformer comprises a Rogowski coil, a gatherer and a merging unit, and further comprises a digital/analog converter and a wideband amplifie. The method comprises the following steps: a step of constructing a Rogowski coil model and a gatherer equivalent load model; a step of constructing a power network simulation model; a step of connection with an automatic scanning test apparatus; a step of carrying out an automatic scanning test at the time when a GPS pulse per second is emitted; and a step of repeatedly carrying out the automatic scanning test in case of a time delay. According to the method brought forward by the invention, various transient phenomena of currents of a power transmission line can be simulated, the dynamic response behavior of the Rogowski coil electronic current transformer is detected, and the method offers help for detection of the capability of the Rogowski coil electronic current transformer in adapting to the operation requirement of a transformer and improvement of technical performance.