The X-ray diffraptometer type XYS-1 consists of a X-ray generator, a goniometer and a recorder equipped with an electronic counter, ratemeter, recorder and remote control system. By employing some new techniques like integrated circuits, pulsecontrolled step-spanning, step motor scanning with photoelectric counting of the angle for the goniometer and central panel display, this apparatus is mora reasonably constructed and easily maintained and can be remotely controlled, so that the operator will be less exposed to the radiation.