PROBLEM TO BE SOLVED: To provide an infrared clinical thermometer which can accurately measure a body temperature in a non-contact manner while having a simple structure.SOLUTION: In an infrared clinical thermometer, a distance sensor 300 comprises a light source 301 that emits light L, a projection lens 311 that projects the light L of the light source 301 to a human body side, a light-receiving sensor 302, and a light-receiving lens 312 that, when a body part is positioned at a predetermined distance FC, causes return light LR of the light L obtained from a human body to be received by the light-receiving sensor 302.
