A time-domain resource determination method, comprising: receiving, by a terminal, first indication information sent by a network device, wherein the first indication information is used to indicate whether a first time-domain resource determination rule or a second time-domain resource determination rule is used to determine whether a first time slot is used for transmitting a first channel scheduled by first scheduling information; determining, by the terminal, a time-domain resource determination rule to be used according to the first indication information, and determining at least one time slot for transmitting the first channel based on the determined time-domain resource determination rule; and performing, by the terminal, transmission of the first channel with the network device in the determined at least one time slot; wherein if the first scheduling information schedules N symbols to be a first transmission direction in at least one time slot, and N is a positive integer, then: the first time-domain resource determination rule is: if transmission directions of the N symbols in the first time slot are all configured as the first transmission direction, the terminal determines that the first time slot is available for transmission of the first channel; the second time-domain resource determination rule is: if transmission directions of the N symbols in the first time slot are all configured as the first transmission direction and/or a flexible transmission direction, the terminal determines that the first time slot is available for transmission of the first channel. receiving, by a terminal, first indication information sent by a network device, wherein the first indication information is used to indicate whether a first time-domain resource determination rule or a second time-domain resource determination rule is used to determine whether a first time slot is used for transmitting a first channel scheduled by first scheduling information; determining, by the terminal, a time-domain resource determination rule to be used according to the first indication information, and determining at least one time slot for transmitting the first channel based on the determined time-domain resource determination rule; and performing, by the terminal, transmission of the first channel with the network device in the determined at least one time slot; wherein if the first scheduling information schedules N symbols to be a first transmission direction in at least one time slot, and N is a positive integer, then: the first time-domain resource determination rule is: if transmission directions of the N symbols in the first time slot are all configured as the first transmission direction, the terminal determines that the first time slot is available for transmission of the first channel; the second time-domain resource determination rule is: if transmission directions of the N symbols in the first time slot are all configured as the first transmission direction and/or a flexible transmission direction, the terminal determines that the first time slot is available for transmission of the first channel. the first time-domain resource determination rule is: if transmission directions of the N symbols in the first time slot are all configured as the first transmission direction, the terminal determines that the first time slot is available for transmission of the first channel; the second time-domain resource determination rule is: if transmission directions of the N symbols in the first time slot are all configured as the first transmission direction and/or a flexible transmission direction, the terminal determines that the first time slot is available for transmission of the first channel.