Disclosed herein is a digital mammography device. The digital mammography device according to the present invention includes: a pressure pad configured to be movably installed between an X-ray generator irradiating X-ray and a detector receiving the X-ray penetrating through a subject and compress the subject a pressure pad driving part configured to include a motor and a power transferring part moving the pressure pad using power of the motor and an applied pressure transferring part configured to include a coupling block to which the pressure pad is fixed and a moving block fixed to the power transferring part and relatively and movably connected to the coupling block, and provide an electrical signal depending on a relative movement displacement between the coupling block and the moving block.
