An item location tracking device 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 which has an insertion space (S2), into which the tracker body is inserted, and is fixedly installed on the item; and a permanent magnet disposed in the insertion space (S2) to provide a magnetic field to detect whether the tracker body is separated from the bracket , 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 (S1) with an open top and is detachably coupled to the bracket ; at least one circuit board on which the sensing portion and the communication module are mounted and which is disposed in the accommodation space (S1); a battery disposed in the accommodation space (S1) 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 which has an insertion space (S2), into which the tracker body is inserted, and is fixedly installed on the item; and a permanent magnet disposed in the insertion space (S2) to provide a magnetic field to detect whether the tracker body is separated from the bracket , 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 (S1) with an open top and is detachably coupled to the bracket ; at least one circuit board on which the sensing portion and the communication module are mounted and which is disposed in the accommodation space (S1); a battery disposed in the accommodation space (S1) 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 (S1) with an open top and is detachably coupled to the bracket ; at least one circuit board on which the sensing portion and the communication module are mounted and which is disposed in the accommodation space (S1); a battery disposed in the accommodation space (S1) 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. <EOS>