Abstract: A plot pen toy, comprising a penholder and a connecting piece. The foresaid connecting piece is equipped with a slot matching with the penholder for plug connection, and couples of the penholder form a modeling connected by the connecting pieces. The foresaid connecting piece is formed by a sleeve. Or, the foresaid connecting piece is a ball in shape, and there are at least two slots in surface of the connecting piece for holding two penholders. This utility model takes use of the characteristic of the plot pen that it is almost the same in dimension. With the plot pen used as basic pieces and connected by the connecting piece, the basic pieces are jointed together to form various modeling. By this way, the plot pen can be used as a connected toy making the plot pen not only equipped with function of drawing but be used as a toy. Even if color ink in the plot pen is used up, it can also be used as a toy. Moreover, when more plot pen accumulated, you can make more modeling with them.