Label printer and label printing method

The invention relates to the technical field of label printers, discloses a label printer and a label printing method, and solves the problems that in the tearing process, label paper needs to be tightly pressed on a sawtooth-shaped blade, the label paper cannot be torn easily, and actual operation is inconvenient. One side of the label printer body is fixedly connected with a supporting plate and a tool apron, the top of the tool apron is fixedly connected with a control shell, one side of the control shell is fixedly connected with one side of the label printer body, a movable block is arranged in the control shell, the tool apron is provided with a first through hole matched with the movable block, and the bottom of the movable block is fixedly connected with a cutting knife. A cutter groove matched with the cutter is formed in the cutter holder, the cutter is located in the cutter groove, and a first movable plate is arranged above the movable block; and a dustproof net can be cleaned, so that the situati