The present utility model provides a piece of portable sterilized absorbent cotton with medicine, comprising trunk(1), liquid tube(2), movable pusher(3) and cotton ball(4). The body of the trunk is a long strip of hollow tube, of which at the bottom of the cavity, a tubing guide(6) is provided in the middle. The pusher(3) is comprised of a round table section(10) in the front, straight lever section(11) in the middle and the button(12) at the end. The central axle is a venting tube(13) formed of tubular construction running through from top to bottom. The button section(12) is a ring-shaped cap construction comprising a round bottom and a ring side wall, of which the center of the inner side of the bottom is connected with the end of the straight lever(11) and between the edge of the side wall and the edge of the end of the trunk(1), a connecting string(14) is provided. The cotton ball(4) is made of sterilized absorbent cotton winding the perimeter of the guide channel(8) in the trunk(1). It features easy portability and sterilization, long shelf life, simple operation, lower cost, safety and reliability, and is suitable for application at home, for trips and for medical institutions.