Provided are an ultrasound imaging apparatus and a method of generating an ultrasound image. The method includes: transmitting ultrasound signals to an object; receiving ultrasound echo signals from the object; generating ultrasound image data based on the received ultrasound echo signals; identifying a fetus's skull from the ultrasound image data; identifying, based on the identified fetus's skull, a caput succedaneum region corresponding to caput succedaneum occurring in the fetus; and displaying information about the caput succedaneum region.