The invention discloses a flexible pin shaping device. The device comprises a base and a positioning seat mounted on the base and used for placing a workpiece. A plurality of through holes for placingpins of the workpiece are formed in the bottom surface of the positioning seat, and the bottom of the positioning seat is provided with a shaping component capable of moving transversely relative tothe positioning seat. The shaping component comprises a first shaping block and a second shaping block which can get close to each other and separated, V-shaped shaping openings are formed in the first shaping block and in the second shaping block, the shaping openings of the first and second shaping blocks are oppositely mounted and form a rhombic shaped hole, and a driving mechanism used for driving the shaping component to move is mounted below the positioning seat. The device can replace manual operate and greatly improve the efficiency and reliability of plug-ins, the labor intensity of workers is reduced, and the labor cost is reduced.