The invention discloses a three-dimensional dynamic flexible printed circuit board stamping device which comprises a workbench. The workbench is provided with a support frame. The support leg of the support frame is provided with a fixing plate. Y-phase supports are fixed to the four corners of the outer lower surface of the fixing plate. A roller lead screw is inserted into the Y-phase supports. A servo motor is fixed to the group of Y-phase supports. The driving end of the servo motor is connected with the end face of the roller lead screw. Screw nuts are assembled on the roller lead screw. A Y-phase moving plate is fixed to the screw nuts. The bottom surface of the Y-phase moving plate is provided with a group of chutes in which sliding blocks are arranged. Racks are fixed to the outer lower surface of the sliding blocks. A No. 1 rotary hole is disposed at the center of the upper surface of the Y-phase moving plate. The three-dimensional dynamic flexible printed circuit board stamping device does not depend on a driving mold any more, is accurate in stamping position, and can achieve complete automation after a PLC series controller is installed on an empty position.