Disclosed is a laundry treating apparatus. The present invention includes a cabinet, a tub provided within the cabinet, a drum provided within the tub to receive a treatment target therein, the drum made of metallic material, an induction module provided to the tub to heat the drum by induction, an infrared sensor provided to the tub to measure a temperature of the drum, and a barrel lens connected to the infrared sensor so that thermal radiation radiated from the drum enters the barrel lens, wherein the barrel lens includes a guide portion guiding vertically incident thermal radiation to the infrared sensor only.