A service feedback method performed by a first communications device, comprising: receiving (102, 204, 304, 404, 504, 604, 704, 804) a first service sent by a second communications device on a first time-frequency resource in a first subframe, wherein the first time-frequency resource comprises at least one of a physical control channel resource in the first subframe, a physical shared channel resource in the first subframe, or a feedback resource; and sending (103, 205, 305, 405, 505, 605, 705, 805), at a preset feedback subframe location, first feedback information corresponding to the first service, wherein an interval between the first subframe and a feedback subframe corresponding to the feedback subframe location is first timing, an interval between a subframe corresponding to a second time-frequency resource used by the second communications device to send a second service, after the first service has been sent by the second communications device on the first time-frequency resource, and a subframe corresponding to a third time-frequency resource used by the first communications device to send second feedback information to the second communications device is second timing, and the first timing is less than the second timing, wherein the first communications device is a user equipment, and the second communications device is a base station; the first time-frequency resource is the physical downlink control channel resource in the first subframe, and the second time-frequency resource is the physical downlink shared channel resource in the first subframe; or the first time-frequency resource is a part of the physical downlink shared channel resource in the first subframe, and the second time-frequency resource is a remaining part of the physical downlink shared channel resource in the first subframe; or the first time-frequency resource is a part of the physical downlink control channel resource in the first subframe and a part of the physical downlink shared channel resource in the first subframe, and the second time-frequency resource is a remaining part of the physical downlink shared channel resource in the first subframe; and before the receiving a first service sent by a second communications device on a first time-frequency resource in a first subframe, the method further comprises: receiving first indication information sent by the second communications device, wherein the first indication information is used to indicate to the first communications device that the first subframe comprises the first service. receiving (102, 204, 304, 404, 504, 604, 704, 804) a first service sent by a second communications device on a first time-frequency resource in a first subframe, wherein the first time-frequency resource comprises at least one of a physical control channel resource in the first subframe, a physical shared channel resource in the first subframe, or a feedback resource; and sending (103, 205, 305, 405, 505, 605, 705, 805), at a preset feedback subframe location, first feedback information corresponding to the first service, wherein an interval between the first subframe and a feedback subframe corresponding to the feedback subframe location is first timing, an interval between a subframe corresponding to a second time-frequency resource used by the second communications device to send a second service, after the first service has been sent by the second communications device on the first time-frequency resource, and a subframe corresponding to a third time-frequency resource used by the first communications device to send second feedback information to the second communications device is second timing, and the first timing is less than the second timing, wherein the first communications device is a user equipment, and the second communications device is a base station; the first time-frequency resource is the physical downlink control channel resource in the first subframe, and the second time-frequency resource is the physical downlink shared channel resource in the first subframe; or the first time-frequency resource is a part of the physical downlink shared channel resource in the first subframe, and the second time-frequency resource is a remaining part of the physical downlink shared channel resource in the first subframe; or the first time-frequency resource is a part of the physical downlink control channel resource in the first subframe and a part of the physical downlink shared channel resource in the first subframe, and the second time-frequency resource is a remaining part of the physical downlink shared channel resource in the first subframe; and before the receiving a first service sent by a second communications device on a first time-frequency resource in a first subframe, the method further comprises: receiving first indication information sent by the second communications device, wherein the first indication information is used to indicate to the first communications device that the first subframe comprises the first service.