Provided are an ultrasound system and method for automatically activating an ultrasound probe based on motion of the ultrasound probe. The ultrasound system includes an ultrasound probe for transmitting an ultrasound signal to an object and receiving an ultrasound echo signal reflected from the object a sensing unit for sensing the ultrasound probe and generating sensing information corresponding to motion of the ultrasound probe and an automatic activation unit for activating the ultrasound probe based on the sensing information.
