A tag communication device performing wireless communication with a radio frequency identifier (RFID) tag comprising a light emitting unit, comprising: a communication unit that performs wireless communication with the RFID tag; an imaging unit that images at least a portion of a communicable range of the communication unit; and a control unit, wherein the control unit performs an acquisition process of acquiring tag identifications (IDs) of one or more RFID tags, which are present in the communicable range of the communication unit, through the communication unit, a transmission process of transmitting a light emission instruction to at least some of the RFID tags corresponding to the acquired tag IDs through the communication unit, a measurement process of measuring a distance between the imaging unit and a position where the light emitting unit emits light based on the light emission instruction, on the basis of imaging information of the imaging unit, and an operation process of performing a predetermined operation on an RFID tag to which the light emission instruction is transmitted through the communication unit in a case where it is determined that the distance is within a predetermined range, said predetermined operation being related to communication with the RFID tag or reading/writing information from/to the RFID tag, the tag communication device being characterized in that the control unit sets two or more sub-ranges within the predetermined range in the operation process, and performs a different operation on the RFID tag to which the light emission instruction is transmitted depending on in which sub-range the distance between the imaging unit and the position where the light emitting unit emits light based on the light emission instruction is included, in the operation process. a communication unit that performs wireless communication with the RFID tag; an imaging unit that images at least a portion of a communicable range of the communication unit; and a control unit, wherein the control unit performs an acquisition process of acquiring tag identifications (IDs) of one or more RFID tags, which are present in the communicable range of the communication unit, through the communication unit, a transmission process of transmitting a light emission instruction to at least some of the RFID tags corresponding to the acquired tag IDs through the communication unit, a measurement process of measuring a distance between the imaging unit and a position where the light emitting unit emits light based on the light emission instruction, on the basis of imaging information of the imaging unit, and an operation process of performing a predetermined operation on an RFID tag to which the light emission instruction is transmitted through the communication unit in a case where it is determined that the distance is within a predetermined range, said predetermined operation being related to communication with the RFID tag or reading/writing information from/to the RFID tag, the tag communication device being characterized in that the control unit sets two or more sub-ranges within the predetermined range in the operation process, and performs a different operation on the RFID tag to which the light emission instruction is transmitted depending on in which sub-range the distance between the imaging unit and the position where the light emitting unit emits light based on the light emission instruction is included, in the operation process.