The invention discloses a temperature monitoring system for a glass hot bending furnace, and effectively solves the problem of inaccurate temperature control of the glass hot bending furnace caused by various factors such as poor equipment aging or inaccurate detected temperature due to long-term working of a temperature sensor at a high temperature in the prior art. The temperature monitoring system comprises a thermodetector and a temperature control circuit, when the glass hot bending furnace works, the thermodetector enters the glass hot bending furnace along with a glass product, a real-time temperature signal I detected by the thermodetector and a real-time temperature signal II detected by a temperature sensor are sent to the temperature control circuit, and the temperature control circuit controls the temperature of the glass product to be detected by the thermodetector. And the temperature control circuit is electrically connected with the temperature controller, so that the problem that the reject ratio of glass products is increased is avoided.