Anti-rolling pen cap

The utility model discloses an anti-rolling pen cap, comprising an outer shell and an inner layer, wherein the appearance of the pen cap is designed to be triangular prism-shaped; a cylindrical hole, which is consistent with the axial directional of the triangular prism, is formed in the pen cap; the triangular prism-shaped outer shell is made from hard material; and the inner layer with circular holes therein is made from soft and elastic material. The anti-rolling pen cap can be used by inserting pencils into the circular holes of the soft inner layer; through use of the pen cap, the pencils do not roll easily, thus preventing damage due to rolling of the pencils.