The invention provides an automation outline bound limitation detecting system. The automation outline bound limitation detecting system comprises a track vehicle, a display output module, a programmable logic controller (PLC) control module, an obstacle point detecting device and a mileage measuring device, wherein the display output module is arranged in the track vehicle, the PLC control module is arranged in the track vehicle and is in communicating connection with the display output module, the obstacle point detecting device is fixed outside the track vehicle and connected with the PLC control module, and the mileage measuring device is fixed on a wheel of the track vehicle and is in communicating connection with the PLC control module. The automation outline bound limitation detecting system is simple in overall structure, high in bearing capability, strong in applicability, low in input cost, time-saving and labor-saving, achieves detection of obstacle points of detection running tunnels and station frames, remarkably improves the detection efficiency while greatly reducing labor force and has remarkable overall profit, and an operator does not need to park to make manual marks.