An infrared thermometer with function of waterproof includes a thermometer body unit, a, an infrared sensing unit, A thermometer body unit has a measurement side and an opening side, wherein the opening side is opposite to the measurement side. A waterproof unit has an waterproof action key and a transparent inner tube, and the waterproof external tube, and the waterproof action key and the transparent inner tube and the waterproof external tube are integrated A rear cover connect with the opening side of thermometer body unit. An infrared sensing module disposed within the thermometer body and includes an infrared sensor and reflective mirror and the LCD. Thereby, the infrared thermometer of the present has a convenience and cost down.一種具有防水功能的紅外線溫度計,包括:一溫度計本體、一紅外線溫度感測單元。所述一溫度計本體具有一探側端;及一相對於探側端之另一開口端,且具有一防水量測按鍵及一透明內管與一防水外管;且防水量測按鍵與一透明內管及防水外管為一體成形;一後蓋殼體,其與溫度計本體的開口端緊固相接;一紅外線溫度感測單元,其設於所述本體內;其具有紅外線反射鏡與一紅外線感測器且電性連接顯示單元與控制電路。藉此,本創作的防水功能紅外線溫度計具有便利性且有效的降低成本。1‧‧‧防水功能的紅外線溫度計10‧‧‧溫度計本體110‧‧‧探測端111‧‧‧開口端112‧‧‧後蓋殼體1120‧‧‧螺紋部117‧‧‧防水量測按鍵118‧‧‧防水外管119‧‧‧透明內管12‧‧‧紅外線溫度感測單元120‧‧‧紅外線感測器122‧‧‧顯示單元124‧‧‧紅外線反射鏡
