Disclosed is a device and method for measuring temperature with infrared array sensor. This device includes: an infrared array sensor module to take thermal picture information of a subject, including a plurality of infrared sensors arranged in an array of pixels an on-screen display module to generate an indicator having a profile corresponding to an entire or local shape of the subject and defining a target point to be measured for temperature a display module to express the indicator and the thermal picture information and a controller to enable the infrared array sensor module to measure the subjects temperature if the target point displayed by the thermal picture information overlaps with the indicator while the thermal picture information is expressed on the display module along with the indicator.
