Reuse the discarded paper, and the printed typo paper can be modified in time to avoid repeated printing and waste of paper to realize green design. Inspired by the stacking of paper used by the printer in the teacher's office, the number of paper used in daily life is increasing day by day. From the perspective of environmental protection, paper can be reused, so this product is available. The polygon cutting on the side is different from the traditional shape, giving it a sense of technology. The growth cycle of trees is long, and a large number of trees need to be cut down to make paper, which greatly damages the environment. This product makes paper reuse and reprinting greatly reduces the waste of paper and makes life more environmentally friendly.