A door closer kit (40) for a double swing door includes a door closer (50) for concealedly mounting to a door leaf (71) and a mount (60) for concealedly mounting to a door frame (72). A shaft connector (64) of the mount (60) is connected with a turnable shaft (54) of the door closer (50) in such a way that the door leaf (71) is swung about an axis of the turnable shaft (54) upon receiving a push or pull force and the door leaf will return back to its initial position upon release of the force therefrom. The mount (60) includes a locating device (68) acting on the shaft connector (64) for adjusting and fixing the angular orientation of the shaft connector (64) relative to the door frame (72) such that the door leaf (71) can be conveniently adjusted to be in alignment with the door frame (72) in a coplanar manner when the door leaf (71) receives no external force.