A handset mobile communication device for measuring body temperature and body temperature measuring method thereof is provided. The aforementioned handset communication device acquired an optical image and thermal image form an external target, then compared and correlated the two images and provided temperature information of selected portion of the target. Therefore, the aforementioned handset device may provide user to acquire temperature information of selected portion of target by contactless means. With respect to the previous contacting measurement, the device and method thereof of present application can provide more secure temperature measuring solution to health care professionals.
