The invention provides an automatic monitoring device for a coke oven heating exhaust gas exchange system. The automatic monitoring device comprises a plurality of exhaust gas exchange temperature measuring devices and an automatic instrument control system which are arranged inside a coke oven, wherein the automatic instrument control system comprises a repeater, a server and a display screen; each coke oven flue gas temperature thermal resistor is connected with the repeater through a conductive wire; the repeater is in communication connection with the server; the server comprises a temperature comparing executive module and an alarm module; the temperature comparing executive module is used for receiving a temperature value sensed by each coke oven flue gas temperature thermal resistor and comparing the received temperature value with a threshold value; when the sensed temperature value exceeds the threshold value, the alarm module makes an alarm for reminding. The automatic monitoring device finds problems of exhaust gas exchange equipment timely, especially finds hidden problems in advance by monitoring flue gas temperature change of each heat number of the coke oven; the automatic monitoring device reduces the labor intensity of post workers or reduce the number of the post workers and reduce the production cost of an enterprise; the automatic monitoring device eliminates potential safety hazards of the equipment.