A wireless detonator comprising: a detonation side receiving antenna configured to wirelessly receive energy for driving, a control signal and an initiation signal; a detonation side transmitting antenna configured to wirelessly transmit a response signal to the control signal; an initiator; and a detonation side electronic circuit configured to receive the energy for driving, the control signal and the initiation signal via the detonation side receiving antenna, the detonation side electronic circuit configured to transmit the response signal in response to the control signal via the detonation side transmitting antenna, and the detonation side electronic circuit further configured to ignite the initiator based on the initiation signal; characterized in that: a response frequency of the response signal transmitted from the detonation side transmitting antenna is set to be greater than or equal to 100 MHz and less than or equal to 1 GHz, the wireless detonator is accommodated in a tubular case and comprises an auxiliary transmission antenna that is made of a conductive material with a predetermined length so as to complement a transmission from the detonation side transmitting antenna, the auxiliary transmission antenna includes a lead portion and a guide portion, the guide portion is formed as one end of the auxiliary transmission antenna and is attached to at least either an outer side or an inner side of a part of the tubular case, the lead portion is formed as another end of the auxiliary transmission antenna and extends away from the tubular case, and the auxiliary transmission antenna is not in contact with the detonation side transmitting antenna. a detonation side receiving antenna configured to wirelessly receive energy for driving, a control signal and an initiation signal; a detonation side transmitting antenna configured to wirelessly transmit a response signal to the control signal; an initiator; and a detonation side electronic circuit configured to receive the energy for driving, the control signal and the initiation signal via the detonation side receiving antenna, the detonation side electronic circuit configured to transmit the response signal in response to the control signal via the detonation side transmitting antenna, and the detonation side electronic circuit further configured to ignite the initiator based on the initiation signal; characterized in that: a response frequency of the response signal transmitted from the detonation side transmitting antenna is set to be greater than or equal to 100 MHz and less than or equal to 1 GHz, the wireless detonator is accommodated in a tubular case and comprises an auxiliary transmission antenna that is made of a conductive material with a predetermined length so as to complement a transmission from the detonation side transmitting antenna, the auxiliary transmission antenna includes a lead portion and a guide portion, the guide portion is formed as one end of the auxiliary transmission antenna and is attached to at least either an outer side or an inner side of a part of the tubular case, the lead portion is formed as another end of the auxiliary transmission antenna and extends away from the tubular case, and the auxiliary transmission antenna is not in contact with the detonation side transmitting antenna. a response frequency of the response signal transmitted from the detonation side transmitting antenna is set to be greater than or equal to 100 MHz and less than or equal to 1 GHz, the wireless detonator is accommodated in a tubular case and comprises an auxiliary transmission antenna that is made of a conductive material with a predetermined length so as to complement a transmission from the detonation side transmitting antenna, the auxiliary transmission antenna includes a lead portion and a guide portion, the guide portion is formed as one end of the auxiliary transmission antenna and is attached to at least either an outer side or an inner side of a part of the tubular case, the lead portion is formed as another end of the auxiliary transmission antenna and extends away from the tubular case, and the auxiliary transmission antenna is not in contact with the detonation side transmitting antenna.