The present invention does not use a compression member of a pressurizing method, but by vacuum-sucking the breast, pulling it with an appropriate force, and maintaining the pulled state, thereby reducing the pain during shooting as much as possible, and at the same time, a photographic auxiliary device that can firmly support the breast during shooting. It provides a breast cancer diagnosis device equipped with. The breast cancer diagnosis device of the present invention includes a main body, a main post disposed along the longitudinal direction of the main body so as to be rotatable 360° around a rotation axis of the main body, an X-ray tube head installed on the front top of the main post, and directly under the X-ray tube head. An image receptor provided in the room and fixed on the lower surface of the subpost installed so as to move up and down along the main post, and an imaging auxiliary device installed on the image receptor to vacuum the breast and pull it toward the rear and maintain the pulled state. Including, the photographing auxiliary device is for adsorbing the breast, one side is formed in an open cylindrical shape and provided with a stopper for opening and closing an air hole communicating with the inside, and a fixture in which the suction port is detachably fixed , It is fixed to the upper surface of the rear side of the image receptor, a pulling mechanism for moving the fixture in the forward and backward directions, and a vacuum pump connected to the suction port through a vacuum hose, and a vacuum pump for acting on the suction port.본 발명은 가압하는 방식의 압축부재를 사용하지 않고, 유방을 진공흡착하여 적절한 힘으로 당기고 당겨진 상태를 유지함으로써 촬영시 통증을 최대한 저감시킴과 동시에 촬영시 유방을 견고하게 지지할 수 있는 촬영보조장치가 구비된 유방암 진단기를 제공한다.본 발명의 유방암 진단기는, 본체와, 본체에 회전축을 중심으로 360°회전가능하게 본체의 종방향을 따라 배치된 메인포스트와, 메인포스트의 전면 상단에 설치된 엑스레이튜브헤드와, 엑스레이튜브헤드의 직하방에 마련되며 상기 메인포스트를 따라 상하이동가능하게 설치된 서브포스트의 하단면에 고정된 이미지리셉터와, 이미지리셉터 상에 설치되어 유방을 진공흡착하여 후방쪽으로 당기고 당긴 상태를 유지하기 위한 촬영보조장치를 포함하며, 상기 촬영보조장치는, 유방을 흡착하기 위한 것으로, 일측이 개방된 통형상으
