The invention provides a voltage transformer simulation examination system and a working method. The system comprises a teacher machine and student machines connected in a communication mode with the teacher machine. Each student machine includes a lower computer and a voltage transformer detection simulation platform, wherein the voltage transformer detection simulation platform includes a control machine, and simulators connected with the control machine and used for test of voltage transformers. The teacher machine of the system carries out voltage transformer examination on students after setting voltage transformer parameters of the student machines. The working voltage and current of the system are far smaller than the voltage and current of a real environment, and reliable security guarantee can be provided for students in voltage transformer test examination under safe working voltage and current.