A method of moving a display of an ultrasound diagnostic device is disclosed. The method includes obtaining an image of an operator of the ultrasound diagnostic device performing ultrasound imaging of an object by using the ultrasound diagnostic device； determining at least a viewing direction and optionally a position of the operator from the obtained image of the operator； and changing at least one of an orientation from a first angle to a second angle, and a position from a first position to a second position of the display connected to the ultrasound diagnostic device according to at least the determined viewing direction and optionally the determined position of the operator.
