The structure of the colored fountain pen includes a plastic pen shell with a cavity in the pen shell and a sponge filled in the pen shell. At one end of the pen shell is a pen tongue made of plastic and nylon material. The pen tongue is tightly fitted with the pen tip. Long strip shape, the top of the pen tongue is an arc top, and the end of the pen shell is blocked.

The monochromatic color pen is composed of three parts: the barrel, nib, and pen core. The refill is filled with a color water.