An item location tracking device (100, 200, 300) having an anti-theft function, comprising: a tracker body comprising a sensing portion and a communication module configured to externally transmit information obtained using the sensing portion; a housing-shaped bracket (120, 220, 320) which has an insertion space, into which the tracker body is inserted, and is fixedly installed on the item; and a permanent magnet disposed in the insertion space to provide a magnetic field to detect whether the tracker body is separated from the bracket (120, 220, 320), wherein the sensing portion includes a magnetic force sensor configured to detect a magnetic field generated by the permanent magnet and at least one condition sensor configured to detect condition information of an item, wherein the tracker body is detachably coupled to the bracket, wherein the tracker body comprises: a lower cover which has an accommodation space with an open top and is detachably coupled to the bracket (120, 220, 320); at least one circuit board on which the sensing portion and the communication module are mounted and which is disposed in the accommodation space; a battery disposed in the accommodation space and electrically connected to the circuit board; an upper cover configured to cover the open top of the lower cover; and a control portion configured to control overall operations of the tracker body, wherein, when the magnetic force sensor senses separation between the tracker body and the bracket, the communication module transmits separation information. a tracker body comprising a sensing portion and a communication module configured to externally transmit information obtained using the sensing portion; a housing-shaped bracket (120, 220, 320) which has an insertion space, into which the tracker body is inserted, and is fixedly installed on the item; and a permanent magnet disposed in the insertion space to provide a magnetic field to detect whether the tracker body is separated from the bracket (120, 220, 320), wherein the sensing portion includes a magnetic force sensor configured to detect a magnetic field generated by the permanent magnet and at least one condition sensor configured to detect condition information of an item, wherein the tracker body is detachably coupled to the bracket, wherein the tracker body comprises: a lower cover which has an accommodation space with an open top and is detachably coupled to the bracket (120, 220, 320); at least one circuit board on which the sensing portion and the communication module are mounted and which is disposed in the accommodation space; a battery disposed in the accommodation space and electrically connected to the circuit board; an upper cover configured to cover the open top of the lower cover; and a control portion configured to control overall operations of the tracker body, wherein, when the magnetic force sensor senses separation between the tracker body and the bracket, the communication module transmits separation information. a lower cover which has an accommodation space with an open top and is detachably coupled to the bracket (120, 220, 320); at least one circuit board on which the sensing portion and the communication module are mounted and which is disposed in the accommodation space; a battery disposed in the accommodation space and electrically connected to the circuit board; an upper cover configured to cover the open top of the lower cover; and a control portion configured to control overall operations of the tracker body, wherein, when the magnetic force sensor senses separation between the tracker body and the bracket, the communication module transmits separation information.