Open-type propelling pencil with added pencil lead

The utility model discloses an open-type propelling pencil with an added pencil lead. The open-type propelling pencil with the added pencil lead is characterized in that an eraser (11) is tightly placed on a cylinder (23) on the upper portion of a base in a matched mode, an open-close mechanism is placed on the side face of the base (13), and the lead can be added when a user touches and presses a sliding button (15). The stroke of the upward sliding of a pencil head (2) is limited by the fact that a sliding gasket (20) touches a lead-locking block (5), and the length of the exposed pencil lead can be controlled within 0.5mm-0.7mm. The open-type propelling pencil with the added pencil lead has the advantages that the pencil lead can be added conveniently, the length of the exposed pencil lead can be controlled, and the pencil lead is not broken and pinched easily.