An apparatus for adjusting a working status of an aggregated link, applied to a receive end device, wherein the apparatus comprises: a modulation mode adjustment determining module, configured to determine to switch a modulation mode of a first sub-link of the aggregated link from a first modulation mode to a second modulation mode; a delay determining module, configured to: when determining to switch the modulation mode of the first sub-link of the aggregated link from the first modulation mode to the second modulation mode, determine a transmission delay of transmitting a data slice in the second modulation mode by using the first sub-link; and a difference comparison module, configured to compare the transmission delay of transmitting a data slice in the second modulation mode by using the first sub-link with a transmission delay of transmitting a data slice by using another sub-link of the aggregated link, to obtain a difference, wherein the another sub-link comprises a sub-link that is currently in an enabled state in the aggregated link; characterized in that the apparatus further comprises a control information sending module, configured to: if the difference meets a preset condition, send information for controlling a working status of the first sub-link to a transmit end device, so that the transmit end device controls the working status of the first sub-link in the second modulation mode; wherein the difference meets the preset condition if the difference is greater than a threshold according to downward adjustment of the modulation mode, and controlling the working status of the first sub-link comprises disabling the first sub-link according to the downward adjustment of the modulation mode; or the difference meets the preset condition if the difference is less than or equal to the threshold according to upward adjustment of the modulation mode, and controlling the working status of the first sub-link comprises enabling the first sub-link according to the upward adjustment of the modulation mode. a modulation mode adjustment determining module, configured to determine to switch a modulation mode of a first sub-link of the aggregated link from a first modulation mode to a second modulation mode; a delay determining module, configured to: when determining to switch the modulation mode of the first sub-link of the aggregated link from the first modulation mode to the second modulation mode, determine a transmission delay of transmitting a data slice in the second modulation mode by using the first sub-link; and a difference comparison module, configured to compare the transmission delay of transmitting a data slice in the second modulation mode by using the first sub-link with a transmission delay of transmitting a data slice by using another sub-link of the aggregated link, to obtain a difference, wherein the another sub-link comprises a sub-link that is currently in an enabled state in the aggregated link; characterized in that the apparatus further comprises a control information sending module, configured to: if the difference meets a preset condition, send information for controlling a working status of the first sub-link to a transmit end device, so that the transmit end device controls the working status of the first sub-link in the second modulation mode; wherein the difference meets the preset condition if the difference is greater than a threshold according to downward adjustment of the modulation mode, and controlling the working status of the first sub-link comprises disabling the first sub-link according to the downward adjustment of the modulation mode; or the difference meets the preset condition if the difference is less than or equal to the threshold according to upward adjustment of the modulation mode, and controlling the working status of the first sub-link comprises enabling the first sub-link according to the upward adjustment of the modulation mode.