A correction signal transmission method, comprising: acquiring (101, 201, 601), by a base station of a first network, a transmit timeslot position that is in a guard period, GP, used for transmitting a correction signal, wherein the transmit timeslot position is a timeslot position that is determined based on a timeslot configuration of a second network and/or a signal transmitted by the second network, and interference suffered from a signal transmitted by the second network at the transmit timeslot position is less than a preset interference threshold; and the first network and the second network are comprised in hybrid networks; and transmitting (102, 202, 602), by the base station, a correction signal at the transmit timeslot position; wherein the acquiring, by a base station of a first network, a transmit timeslot position that is in a GP used for transmitting a correction signal comprises: calculating, by the base station of the first network, based on a timeslot configuration of the first network and the timeslot configuration of the second network, a transmit timeslot position that is comprised in the GP and at which signal strength of the second network is less than preset signal strength when a correction signal is being transmitted in the GP; or calculating, by the base station of the first network, based on the signal transmitted by the second network, a transmit timeslot position that is comprised in the GP used for transmitting a correction signal and at which signal strength of the second network is less than preset signal strength. acquiring (101, 201, 601), by a base station of a first network, a transmit timeslot position that is in a guard period, GP, used for transmitting a correction signal, wherein the transmit timeslot position is a timeslot position that is determined based on a timeslot configuration of a second network and/or a signal transmitted by the second network, and interference suffered from a signal transmitted by the second network at the transmit timeslot position is less than a preset interference threshold; and the first network and the second network are comprised in hybrid networks; and transmitting (102, 202, 602), by the base station, a correction signal at the transmit timeslot position; wherein the acquiring, by a base station of a first network, a transmit timeslot position that is in a GP used for transmitting a correction signal comprises: calculating, by the base station of the first network, based on a timeslot configuration of the first network and the timeslot configuration of the second network, a transmit timeslot position that is comprised in the GP and at which signal strength of the second network is less than preset signal strength when a correction signal is being transmitted in the GP; or calculating, by the base station of the first network, based on the signal transmitted by the second network, a transmit timeslot position that is comprised in the GP used for transmitting a correction signal and at which signal strength of the second network is less than preset signal strength. calculating, by the base station of the first network, based on a timeslot configuration of the first network and the timeslot configuration of the second network, a transmit timeslot position that is comprised in the GP and at which signal strength of the second network is less than preset signal strength when a correction signal is being transmitted in the GP; or calculating, by the base station of the first network, based on the signal transmitted by the second network, a transmit timeslot position that is comprised in the GP used for transmitting a correction signal and at which signal strength of the second network is less than preset signal strength.