In a medical ultrasound diagnosis apparatus, a spatial position and orientation of a probe (10) which transmits and receives an ultrasound are measured as coordinate data. Received data and measured data are correlated and stored in a storage unit (26). When received data is read from the storage unit, the coordinate data correlated to the received data is also read. When an ultrasound image based on the received data is replayed and displayed, a reference image (68) based on the coordinate data is also displayed along with the ultrasound image (66). The reference image contains a body mark (70) and a probe mark (72). A diagnosis situation during when the received data is obtained is schematically re-created by the reference image. That is, the diagnosed part and diagnosis direction are represented by a position and an orientation of the probe mark on the body mark.
