The invention provides a method for carrying out visual simulation test on the dielectric loss of a current transformer. The method comprises the following steps of: by utilizing a visual reality technique, establishing a current transformer three-dimensional model, introducing a current transformer mathematical simulation model of the tested current transformer and establishing a corresponding relation of the current transformer three-dimensional model and the current transformer mathematical simulation model; by utilizing the visual reality technique, establishing an instrument three-dimensional model for detecting the tested current transformer, introducing an instrument mathematical simulation model of a current transformer dielectric loss test instrument and establishing a corresponding relation of the instrument three-dimensional model and the instrument mathematical simulation model; and operating a simulation system and calling the current transformer model and the instrument model to carry out visual simulation test. According to the technology provided by the invention, the accuracy and the working efficiency of the simulation test operation are improved, the visual requirement on the power system, which is increased day by day, is met, and the method has ultrahigh popularization value.