Special-shaped pen

The utility model relates to a special-shaped pen, wherein, a pen body adopts the structure of a long column body; a pencil point is formed at the front end of the pen body; the cross section of the long column body is in the shape of a quadrangle, the upper edge of the cross section is in the shape of a great circular arc, and the lower edge of the cross section is in the shape of a small circular arc; both the side edges of the great circular arc and the small circular arc are connected by direct lines; arc-shaped cylindrical surfaces are formed on the column body by the great circular arc and the small circular arc; and two identical planes are respectively formed on the column body by the two linear side edges. By using the special-shaped pen, an index finger, a thumb and a middle finger are led to find a correct comfortable pen holding manner naturally when people holds the pen, in addition, the hand feeling is comfortable. The special-shaped pen is suitable for various pens, suchas a pencil, a pen, a fo