Forehead thermometer capable of displaying different colors according to detected temperature and control circuit thereof

The invention aims at overcoming the defect that the detection efficiency is obviously reduced when a forehead thermometer checks a result after measurement in the prior art. The invention provides aforehead thermometer capable of displaying different colors according to detected temperature and a control circuit of the forehead thermometer, which belong to the technical field of forehead thermometers. The forehead thermometer comprises a forehead thermometer body, and the side surface of the forehead thermometer body is provided with an indicating lamp capable of lighting lights with different colors according to different detected temperature values. According to the forehead thermometer, the indicating lamp capable of lighting different colors of light according to the detected temperature is arranged on the side face, whether the body temperature of a detected person is normal or not can be judged by checking the different colors of the indicating lamp from the side face of the forehead thermometer, and t