A method for crosstalk cancellation processing on a port line of an access device which is interconnected with another access device at a same network position through cables, and the method comprises: when an interface which connects the access device and the other access device enters a working state, obtaining device related information of the other access device through the interface; and according to local device related information of the access device and the device related information of the other access device, determining an access device from the access device and the other access device as a main control access device at a preset rule, so that the main control access device coordinates a crosstalk cancellation processing procedure of the access device and the other access device in a unified manner; wherein the device related information is at least one of: a medium access control MAC address of the access device, the number of ports of the access device which are currently in a working state and start time of the access device; obtaining, by the access device, line configuration information of the other access device connected to the first access device, wherein the line configuration information comprises line operation parameters and a line group identifier of at least one port line, and line group identities of different port lines belonging to a same cable bundle are the same; respectively obtaining, by the access device, according to the line configuration information of the other access device, a crosstalk effect coefficient from a port line of the other access device having a same line group identifier as that of a local port line on the local port line; and performing crosstalk cancellation processing on the local port line on the basis of the obtained the crosstalk effect coefficient. when an interface which connects the access device and the other access device enters a working state, obtaining device related information of the other access device through the interface; and according to local device related information of the access device and the device related information of the other access device, determining an access device from the access device and the other access device as a main control access device at a preset rule, so that the main control access device coordinates a crosstalk cancellation processing procedure of the access device and the other access device in a unified manner; wherein the device related information is at least one of: a medium access control MAC address of the access device, the number of ports of the access device which are currently in a working state and start time of the access device; obtaining, by the access device, line configuration information of the other access device connected to the first access device, wherein the line configuration information comprises line operation parameters and a line group identifier of at least one port line, and line group identities of different port lines belonging to a same cable bundle are the same; respectively obtaining, by the access device, according to the line configuration information of the other access device, a crosstalk effect coefficient from a port line of the other access device having a same line group identifier as that of a local port line on the local port line; and performing crosstalk cancellation processing on the local port line on the basis of the obtained the crosstalk effect coefficient.