Convenient wash-free brush pen

The utility model relates to a convenient wash-free brush pen comprising a penholder and a nib, wherein the nib is provided with a pen cap in a matching manner, and a water storage device in which clean water is contained is arranged in the pen cap. The pen cap of the brush pen is improved; after use, the nib of the brush pen is placed in the pen cap, the penholder of the brush pen is in close fit with a rubber sleeve at the moment, and a sealed protective cavity is formed between the nib and the water storage device; and due to the high internal moisture of the pen cap, the tip of the brush pen is not easy to be dried and can be repeatedly used. Therefore the convenient wash-free brush pen can be free from washing, thereby avoiding the physical movement of repeatedly washing the brush pen, better maintaining the elasticity and prolonging the service life of the brush pen.