A method for determining a channel access scheme, comprising: receiving, by a terminal device, first indication information comprised in a first downlink control channel sent by a base station; wherein the first indication information is used for the terminal device to determine a target channel access scheme corresponding to a target uplink resource, and the target uplink resource is used for transmitting a target uplink channel; wherein the target uplink channel comprises a first uplink control channel, and the first downlink control channel comprises information for determining a target uplink resource of the first uplink control channel; wherein the first downlink control channel further comprises information for scheduling transmission of a first downlink data channel, and the first uplink control channel is used for transmitting HARQ-ACK information corresponding to the first downlink data channel; characterized in that the method further comprises: determining, by the terminal device, the target channel access scheme corresponding to the target uplink resource according to at least one of at least two pieces of first indication information, when a plurality of first downlink control channels comprise indication information of target uplink resources of a plurality of first uplink control channels within a same time unit, wherein each of the plurality of first downlink control channels comprises indication information of a target uplink resource, and at least two first downlink control channels of the plurality of first downlink control channels comprise the first indication information; wherein determining, by the terminal device, the target channel access scheme corresponding to the target uplink resource according to the at least one of the at least two pieces of first indication information comprises: determining, by the terminal device, the target channel access scheme corresponding to the target uplink resource according to last first indication information of the at least two pieces of first indication information. receiving, by a terminal device, first indication information comprised in a first downlink control channel sent by a base station; wherein the first indication information is used for the terminal device to determine a target channel access scheme corresponding to a target uplink resource, and the target uplink resource is used for transmitting a target uplink channel; wherein the target uplink channel comprises a first uplink control channel, and the first downlink control channel comprises information for determining a target uplink resource of the first uplink control channel; wherein the first downlink control channel further comprises information for scheduling transmission of a first downlink data channel, and the first uplink control channel is used for transmitting HARQ-ACK information corresponding to the first downlink data channel; characterized in that the method further comprises: determining, by the terminal device, the target channel access scheme corresponding to the target uplink resource according to at least one of at least two pieces of first indication information, when a plurality of first downlink control channels comprise indication information of target uplink resources of a plurality of first uplink control channels within a same time unit, wherein each of the plurality of first downlink control channels comprises indication information of a target uplink resource, and at least two first downlink control channels of the plurality of first downlink control channels comprise the first indication information; wherein determining, by the terminal device, the target channel access scheme corresponding to the target uplink resource according to the at least one of the at least two pieces of first indication information comprises: determining, by the terminal device, the target channel access scheme corresponding to the target uplink resource according to last first indication information of the at least two pieces of first indication information. determining, by the terminal device, the target channel access scheme corresponding to the target uplink resource according to at least one of at least two pieces of first indication information, when a plurality of first downlink control channels comprise indication information of target uplink resources of a plurality of first uplink control channels within a same time unit, wherein each of the plurality of first downlink control channels comprises indication information of a target uplink resource, and at least two first downlink control channels of the plurality of first downlink control channels comprise the first indication information; wherein determining, by the terminal device, the target channel access scheme corresponding to the target uplink resource according to the at least one of the at least two pieces of first indication information comprises: determining, by the terminal device, the target channel access scheme corresponding to the target uplink resource according to last first indication information of the at least two pieces of first indication information.