A body surface thermometer and a wearable temperature measuring device are disclosed. The body surface thermometer includes an infrared temperature sensor (10) and a shielding protective hood (20) disposed outside the infrared temperature sensor, and the shielding protective hood (20) is an infrared ray shielding protective hood. With the body surface thermometer, the measuring precision of surface temperature of a target object can be promoted, thereby raising the freedom degree of test.
