The invention discloses a cutterhead mud cake forging detection device. The device is characterized in that temperature sensors are uniformly arranged with the same spacing in a sensor base; the sensor base is arranged on a cutterhead; the temperature sensors detect the cutterhead surface to generate a temperature signal, and the temperature signal is conditioned by a signal conditioning module, is sent to an analog/digital conversion module, and is converted into a digital signal; and the digital signal is transmitted by a wireless transmission module arranged on the back of the cutterhead, is received by a wireless receiving module arranged on the front shield of a heading machine, and is sent into the main engine room of the heading machine. The sensor base used has the advantage of wear resistance, so that the temperature sensors are prevented from being rubbed with soil and damaged. When the temperature sensors detect that the temperature of the cutterhead is significantly higher than the normal temperature, a microprocessor determines that a mud cake is forged. A signal is transmitted into the main control room of the heading machine, and the room is timely opened for processing.