Stamp

The utility model relates to a stamp, comprising a stamp body and an imprint body with imprinting surface at the bottom surface, and a connecter which is positioned below the stamp body and connected with the imprint body, the bottom surface of the stamp body and the imprint body are respectively provided with round grooves, the stamp body and the imprint body in the center of the round groove are respectively provided with a convex column, the upper surface and the lower surface of the connecter are respectively provided with an insert pipe, the two insert pipes of the connecter are respectively inserted into the two round grooves correspondingly, the pipe wall of the insert pipe along the axial direction is provided with a slot, the inner surface of the insert pipe is provided with thread, and the outer surface of the insert pipe is provided with dentate convex patterns.