The application relates to a generator stator core short-circuit simulation device comprising an iron core simulation device, a short circuit rod and a switch; the iron core simulation device comprises annular laminated pieces which are laminated and insulated from each other; grooves penetrating through the two end faces of the annular laminated pieces are formed in the inner surfaces of the annular laminated pieces, the grooves are distributed along the circumferential direction of the inner surface of the annular laminated pieces at intervals, a tooth part is formed between every two adjacent grooves, and the inner surfaces of the annular laminated pieces can be used for operating personnel to conduct wiring. The short circuit rod is arranged on the outer surface of the annular laminated pieces in the axial direction of the iron core, and the short circuit rod is in electrical contact with the annular laminated pieces. The two ends of the switch are electrically connected with the tooth part of every two adjacent annular laminated pieces respectively. According to the generator stator core short-circuit simulation device, the size is small, the production cost is saved, the short circuit faults of the stator core can be simulated when the switch is turned on, the switch can be connected with different tooth parts for detection of the short circuit faults of the iron core laminated pieces at different positions, the detection skill level of the test personnel is improved, convenience is brought for use, and the use reliability is high.