The present application relates to an ultrasound system comprising: an ultrasound diagnosis unit (110) for providing ultrasound scanning information of a target object and stress information applied to the target object, the ultrasound diagnosis unit including a probe having a stress applying unit and a stress measuring sensor around a scan plane thereof an elastic image processor (120) for forming an elastic image based on the ultrasound scanning information and the stress information and a display (130) unit for displaying the elastic image.
