A method for configuring a sidelink transmission resource, comprising: receiving, by a first terminal apparatus, downlink control information, DCI, from a network device, wherein the DCI comprises first indication information and/or second indication information, the first indication information is used to indicate a time domain resource on which the first terminal apparatus sends sidelink hybrid automatic repeat request, HARQ, information to the network device, and the second indication information is used to indicate a frequency domain resource on which the first terminal apparatus sends the sidelink HARQ information to the network device and wherein the DCI further comprises third indication information, the third indication information is used to indicate a third time interval, the third time interval is a time interval from a fifth time domain resource to a sixth time domain resource, the fifth time domain resource is a time domain resource on which the first terminal apparatus receives the DCI from the network device, and the sixth time domain resource is a time domain resource on which the first terminal apparatus sends a physical sidelink control channel, PSCCH, and/or a physical sidelink shared channel, PSSCH, to a second terminal apparatus; sending, by the first terminal apparatus, the PSCCH and/or the PSSCH to the second terminal apparatus based on the third indication information; receiving, by the first terminal apparatus, the sidelink HARQ information from the second terminal apparatus; and sending, by the first terminal apparatus, the sidelink HARQ information to the network device based on the first indication information and/or the second indication information. receiving, by a first terminal apparatus, downlink control information, DCI, from a network device, wherein the DCI comprises first indication information and/or second indication information, the first indication information is used to indicate a time domain resource on which the first terminal apparatus sends sidelink hybrid automatic repeat request, HARQ, information to the network device, and the second indication information is used to indicate a frequency domain resource on which the first terminal apparatus sends the sidelink HARQ information to the network device and wherein the DCI further comprises third indication information, the third indication information is used to indicate a third time interval, the third time interval is a time interval from a fifth time domain resource to a sixth time domain resource, the fifth time domain resource is a time domain resource on which the first terminal apparatus receives the DCI from the network device, and the sixth time domain resource is a time domain resource on which the first terminal apparatus sends a physical sidelink control channel, PSCCH, and/or a physical sidelink shared channel, PSSCH, to a second terminal apparatus; sending, by the first terminal apparatus, the PSCCH and/or the PSSCH to the second terminal apparatus based on the third indication information; receiving, by the first terminal apparatus, the sidelink HARQ information from the second terminal apparatus; and sending, by the first terminal apparatus, the sidelink HARQ information to the network device based on the first indication information and/or the second indication information.