To solve the problem such that the leakage of ink in a cap caused by the touching of a pen point with a cap inner wall at mounting the cap that occurs owing to the radial inclination or bending progress of the pen point, and that the pen point drying at the cap mounting that occurs owing to the ink outflow from cap inside at the cap removing or the drying of ink adhered to the closely inserted part of the cap with shaft tube.

In the writing utensil which is configured such that the ink is accommodated in the shaft tube, with the pen point consisting of fiber or porous material used for the ink discharge part fixed to the inner surface of tip opening where the air circulation groove of shaft tube is formed, and with the writing part of pen point projected from the tip opening of shaft tube, the tip opening inner surface of shaft tube is provided with a pen point pressing projection for performing the press-fixing of pen point outer surface in the tip opening inner surface of shaft tube to partition the backward part becoming the side fixed to the pen point pressing projection and the forward part becoming the side for forming a writing portion in the pen point, and is provided with a step part for locking the pen point to the shaft tube in contact with the tip portion of the pen point pressing projection of shaft tube.