The utility model discloses a clearing device for yarn cone hairiness. Bobbin, positioning cards are arranged on the outer walls of the bobbins; the device further comprises a support, a brush roller,a motor, an exhaust fan and an exhaust pipe. Air draft cylinder is arranged on the support, two raised lines are symmetrically arranged in the air draft cylinder; a sliding groove matched with the positioning clamping piece of the bobbin is formed in the raised line; the yarn barrel is accommodated in the air draft barrel; the positioning clamping sheet of the yarn drum is positioned in the sliding chute of the air draft drum; air draft cylinder with one closed end, a driving shaft of the motor penetrates through the closed end of the air draft cylinder and extends into the air draft cylinder; wherein one end of the brush roller is connected with a driving shaft of the motor, the brush roller is located in the air draft barrel and is coaxial with the yarn barrel, the yarn barrel is sleeved outside the brush roller, bristles of the brush roller abut against the inner wall of the yarn barrel, one end of the air draft pipe is connected with the air draft fan, and the other end of the airdraft pipe penetrates through the side wall of the air draft barrel. The yarn drum hairiness removing device can rapidly and effectively remove hairiness.