The present invention relates to an earphone sterilizing device capable of removing bacteria on a unit (2) of an earphone (1) comprising a string (3) and a unit (2) A main body 10 having a key ring, a key, and a ring 11 so that the accessory can be fixed； And a sterilizing lamp 21 for irradiating ultraviolet rays to sterilize the unit 2 of the earphone 1 while inserting and fixing the unit 2 of the earphone 1 on the main body 10, A first gear 26 which is integrally formed and rotatable through a rotation hole 28 formed integrally with the rotary part 20 so as to be wound and arranged so as to be directly under the rotary part 20, And a second gear 27 integrally formed with the rotary shaft 28 so as to be meshed with the first gear 26. The second gear 27 integrally formed with the rotary shaft 28 meshes with the string 3 of the earphone 1, And a rotatable means 25 for rotating the rotatable unit so that the rotatable rotatable rotatable member 25 can be wound around the rotatable rotatable rotatable rotatable member 25 and includes a receiving portion 22 for inserting and fixing the unit 2, (20)； A supporting part 30 having a hook 31 and a roller 32 for supporting the string 3 wound on the main body 10 by the rotation part 20 so as to be able to be smoothly wound； And a sensor 41 interlocked with the sterilizing lamp 21 of the rotary unit 20 to provide a sterilizing operation to the unit 2 of the earphone 1 . Accordingly, the present invention can be easily carried by fastening various key rings, keys, and accessories while being formed so as to be able to be inserted into a bag or bag of a user, and a doll or a cover is put on the outside, It can sterilize various bacteria such as athlete's foot and staphylococcus on the earphone unit installed in the ear to prevent the hearing dysfunction and other diseases of the user in advance and arrange the line up and set the sterilization time so that excessive electricity consumption It is possible to reduce the size of the
