The present invention is a tube-type writing aid with a small air pump attached. This tube prevents the sore of the hand holding the writing instrument for a long time while holding the writing instrument. The tube is shaped like a tall donut with a small air pump at one end. When writing, insert the desired writing instrument into the hole in the center of the tube to operate the small air pump and the tube will swell up and be fixed to the writing instrument. Then grab the tube and take notes. When writing for a long time, the tension of the hand unconsciously grasps the writing instrument and the part of the hand holding the writing instrument hurts. However, even if you hold a writing instrument when writing for a long time by mounting such an air tube, the air inside the tube buffers the writing instrument, so the pressure is less on the hand, so that the hand does not hurt even when writing for a long time.;Ballpoint pen, removable, writing, auxiliary, knob, tube, air
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