Embodiments of the present application provide an antenna line device management method, and devices. A primary device sends a scanning command to an antenna line device, where the scanning command is used to scan the antenna line device; receives a scanning response sent by the antenna line device, where the scanning response includes indication information used to indicate a type of the antenna line device, and the type of the antenna line device is a container antenna line device; sends an HDLC address assignment command to the antenna line device, where the HDLC address assignment command includes an HDLC address assigned by the primary device to the antenna line device; establishes a communication link to the antenna line device according to the HDLC address; sends a capability information query command to the antenna line device; and receives a capability information report sent by the antenna line device.