Provided is an ultrasound diagnosis apparatus including a data acquirer configured to obtain ultrasound data about an object having blood vessels； an image processor configured to extract a blood vessel area from an ultrasound image generated based on the ultrasound data, extract a plaque area included in the blood vessel area, and analyze a risk of plaque based on at least one of a surface shape of the plaque area and brightness information of the plaque area； and a display configured to display the risk of plaque.
