A retrieving device is adapted to be installed in an electric nail gun. The retrieving device includes at least one stationary seat that is adapted to be connected to a swing arm of the nail gun and that has at least one stationary elongated hole being elongated in an extending direction, at least one moving seat that is adapted to be co-movably connected to a movable impact member of the nail gun, and at least one resilient member that interconnects the at least one stationary seat and the at least one moving seat, and that has at least one first end coil extending through the at least one stationary elongated hole and being movable parallel to the extending direction along the at least one stationary elongated hole.