The invention provides an electronic transformer detection method and a scope meter. The detection method is applied to the scope meter. The scope meter comprises a photoelectric converter, a controller connected with the photoelectric converter, and a display screen connected with the controller. The scope meter can be used as follows: before accuracy detection and calibration of an electronic transformer by detection equipment, a data packet is converted by the photoelectric converter into network data frames and transmitted to the controller; then the controller converts all acquired bytes of network data frames in one period into detection data of the electronic transformer, so that a sampling count value of all network data frames in one period and a two-dimensional curve corresponding to the detection data of the electronic transformer are constructed and displayed on the display screen. Therefore, through primary detection to the two-dimensional curve, qualification of the electronic transformer can be determined, unqualified electronic transformers can be detected timely, time for installation and detection of the detection equipment can be saved, and time waste is reduced.