An electronic device (1301, 1401) comprising: a Bluetooth communication circuit; an audio processing circuit; memory; and at least one processor which is operatively connected with the Bluetooth communication circuit, the audio processing circuit, and the memory, wherein the memory stores instructions which are configured to, when executed by the at least one processor, cause the electronic device (1301, 1401) to: perform a first communication connection based on a first Bluetooth communication with a first audio electronic device (1302, 1402) having a first Bluetooth address by using the Bluetooth communication circuit, receive, from a second audio electronic device (1303, 1403) having the first Bluetooth address, a second communication connection request based on the first Bluetooth communication while the first communication connection is established, transmit, to the second audio electronic device (1303, 1403), a second communication connection request response signal including rejection information of the received second communication connection request by using the Bluetooth communication circuit due to the first communication connection using the first Bluetooth address already being established, and transmit, to the first audio electronic device (1302, 1402), a message related to the rejection information of the second communication connection request through the first communication connection, the message causing the first audio electronic device (1302, 1402) to identify that the second audio electronic device (1303, 1403) is communicable and to start a scan or an advertising for a second communication connection between the first audio electronic device (1302, 1402) and the second audio electronic device (1303, 1403). a Bluetooth communication circuit; an audio processing circuit; memory; and at least one processor which is operatively connected with the Bluetooth communication circuit, the audio processing circuit, and the memory, wherein the memory stores instructions which are configured to, when executed by the at least one processor, cause the electronic device (1301, 1401) to: perform a first communication connection based on a first Bluetooth communication with a first audio electronic device (1302, 1402) having a first Bluetooth address by using the Bluetooth communication circuit, receive, from a second audio electronic device (1303, 1403) having the first Bluetooth address, a second communication connection request based on the first Bluetooth communication while the first communication connection is established, transmit, to the second audio electronic device (1303, 1403), a second communication connection request response signal including rejection information of the received second communication connection request by using the Bluetooth communication circuit due to the first communication connection using the first Bluetooth address already being established, and transmit, to the first audio electronic device (1302, 1402), a message related to the rejection information of the second communication connection request through the first communication connection, the message causing the first audio electronic device (1302, 1402) to identify that the second audio electronic device (1303, 1403) is communicable and to start a scan or an advertising for a second communication connection between the first audio electronic device (1302, 1402) and the second audio electronic device (1303, 1403). perform a first communication connection based on a first Bluetooth communication with a first audio electronic device (1302, 1402) having a first Bluetooth address by using the Bluetooth communication circuit, receive, from a second audio electronic device (1303, 1403) having the first Bluetooth address, a second communication connection request based on the first Bluetooth communication while the first communication connection is established, transmit, to the second audio electronic device (1303, 1403), a second communication connection request response signal including rejection information of the received second communication connection request by using the Bluetooth communication circuit due to the first communication connection using the first Bluetooth address already being established, and transmit, to the first audio electronic device (1302, 1402), a message related to the rejection information of the second communication connection request through the first communication connection, the message causing the first audio electronic device (1302, 1402) to identify that the second audio electronic device (1303, 1403) is communicable and to start a scan or an advertising for a second communication connection between the first audio electronic device (1302, 1402) and the second audio electronic device (1303, 1403).