Disclosed herein are a wireless probe, an ultrasound imaging apparatus, and a method of controlling the same. The wireless probe includes a determiner for determining whether to switch into a low-power mode based on at least one of a condition of a wireless communication network, whether an ultrasound image is about an object, position information between an ultrasonic imaging apparatus and the wireless probe, and whether a predetermined waiting time has passed; and a probe controller for controlling switching into the low-power mode based on the determination result.