Stapler

The utility model discloses a stapler which comprises a pressing block, a pushing block, a moving pressing cover, a staple fixing structure and an unconnected bottom seat. The upper portion of the pushing block is connected with the pressing block. The lower portion of the pushing block is of a ladder-shaped cylindrical structure, and the radius of the structure is gradually decreased. A protrusion which pushes a staple is arranged on the edge of the bottom face of the pushing block which can be arranged inside the moving pressing cover in a sliding mode. The staple fixing structure is arranged inside the moving pressing cover. A staple outlet hole which is matched with the protrusion is arranged on the bottom face of the moving pressing cover. A return spring is arranged between the pushing block and the moving pressing cover. The bottom seat is provided with a curved staple base plate. According to the stapler, the problem that the stapling position of an existing stapler is limited is solved, an upper part