Provided are an ultrasound imaging apparatus and a method of controlling the same, and more specifically, to a technique for displaying a gain compensation regulating unit including a time gain compensation (TGC) regulating unit or a lateral gain compensation (LGC) regulating unit corresponding to the set ROI when a region of interest (ROI) in an ultrasound image is set. The ultrasound imaging apparatus according to the embodiment includes an input unit configured to receive a command of setting a region of interest (ROI) in an ultrasound image; and a display unit including a first region on which the ultrasound image is displayed and a second region on which a gain compensation regulating unit configured to change a gain compensation value of the ultrasound image is displayed, wherein, when the command of setting the ROI in the ultrasound image displayed on the first region is input, the display unit displays only a gain compensation regulating unit corresponding to the input ROI in the ultrasound image on the second region.