A vehicle door handle device comprising: a detection member including an antenna and a DC driving detection member configured to detect approach or touch of a person, which are electrically connected to a driving controller through a first connection wire and a second connection wire and are connected in parallel, wherein the antenna is configured to be driven by an AC voltage supplied from the driving controller, the detection member is configured to be driven by a DC voltage supplied from the driving controller by respectively connecting the first connection wire and the second connection wire to a positive DC power supply and a ground, the detection member includes a power terminal and a ground terminal that are respectively connected to the first connection wire and the second connection wire, a detection output terminal that is connected to the first connection wire to output a negative detection signal indicating whether or not approach or touch of the person is detected, an antenna driving detection terminal that is connected to the first connection wire, and an antenna driving detection unit configured to detect a driving state of the antenna based on a voltage input to the antenna driving detection terminal, and wherein the vehicle door handle device further comprises a passive element whose both terminals are respectively connected to the antenna driving detection terminal and the ground terminal, the vehicle door handle device being characterised by a DC cut capacitor, one terminal of the DC cut capacitor being connected to the first connection wire and the detection output terminal, the other terminal of the DC cut capacitor being connected to the antenna driving detection terminal such that the antenna driving detection terminal is connected to the first connection wire through the DC cut capacitor. a detection member including an antenna and a DC driving detection member configured to detect approach or touch of a person, which are electrically connected to a driving controller through a first connection wire and a second connection wire and are connected in parallel, wherein the antenna is configured to be driven by an AC voltage supplied from the driving controller, the detection member is configured to be driven by a DC voltage supplied from the driving controller by respectively connecting the first connection wire and the second connection wire to a positive DC power supply and a ground, the detection member includes a power terminal and a ground terminal that are respectively connected to the first connection wire and the second connection wire, a detection output terminal that is connected to the first connection wire to output a negative detection signal indicating whether or not approach or touch of the person is detected, an antenna driving detection terminal that is connected to the first connection wire, and an antenna driving detection unit configured to detect a driving state of the antenna based on a voltage input to the antenna driving detection terminal, and wherein a power terminal and a ground terminal that are respectively connected to the first connection wire and the second connection wire, a detection output terminal that is connected to the first connection wire to output a negative detection signal indicating whether or not approach or touch of the person is detected, an antenna driving detection terminal that is connected to the first connection wire, and an antenna driving detection unit configured to detect a driving state of the antenna based on a voltage input to the antenna driving detection terminal, and wherein the vehicle door handle device further comprises a passive element whose both terminals are respectively connected to the antenna driving detection terminal and the ground terminal, the vehicle door handle device being characterised by a DC cut capacitor, one terminal of the DC cut capacitor being connected to the first connection wire and the detection output terminal, the other terminal of the DC cut capacitor being connected to the antenna driving detection terminal such that the antenna driving detection terminal is connected to the first connection wire through the DC cut capacitor.