The invention relates to the field of transformers, and relates to a transformer temperature indicating controller training and demonstrating device. A pointer type temperature indicating controller,a contact detector, a temperature measurement probe, a temperature control source and a temperature digital display instrument are arranged on a support; the pointer type temperature indicating controller is connected with the temperature measurement probe through a capillary tube 8; the temperature measurement probe is inserted into the temperature control source; the temperature digital displayinstrument is connected with the temperature measurement probe through a three-core cable; and the contact detector is connected with the pointer type temperature indicating controller through an airline head connecting wire 7. A working process and a working principle of the temperature indicating controller can be intuitively demonstrated, so that a training effect is achieved; and meanwhile, various temperature abnormalities can be simulated, so that a guiding effect is achieved for on-site physical fault treatment. The contact detector is arranged, so that the changes of a transformer at different temperature points can be intuitively displayed.