A single-stage switching network synchronization method, the single-stage switching network comprising a plurality of switching devices and a plurality of access devices, each device being provided with a respective Identity, ID, the method comprising: sending, by a first switching device in the plurality of switching devices, a first ID to access devices connected with the first switching device; receiving, by the first switching device, a first suspected target ID, the first suspected target ID being an ID corresponding to a suspected target switching device determined by an access device connected with the first switching device according to the first ID; receiving, by the first switching device, a second suspected target ID sent by a second switching device through the access device, the second suspected target ID being an ID corresponding to a suspected target switching device determined by the second switching device; determining, by the first switching device, a first target ID according to the first suspected target ID and the second suspected target ID, the first target ID being an ID corresponding to a target switching device; judging, by the first switching device, whether the first ID corresponding to the first switching device is identical to the first target ID or not; when the first ID is not identical to the first target ID, selecting a first access device, from the access devices connected with the first switching device, as an information synchronization device, to enable the first switching device to perform information synchronization with the target switching device through the information synchronization device; and sending, by the first switching device, the first target ID to other access devices, except the information synchronization device, connected with the first switching device to enable the other access devices except the information synchronization device to implement an information synchronization process with the target switching device through the first target ID. sending, by a first switching device in the plurality of switching devices, a first ID to access devices connected with the first switching device; receiving, by the first switching device, a first suspected target ID, the first suspected target ID being an ID corresponding to a suspected target switching device determined by an access device connected with the first switching device according to the first ID; receiving, by the first switching device, a second suspected target ID sent by a second switching device through the access device, the second suspected target ID being an ID corresponding to a suspected target switching device determined by the second switching device; determining, by the first switching device, a first target ID according to the first suspected target ID and the second suspected target ID, the first target ID being an ID corresponding to a target switching device; judging, by the first switching device, whether the first ID corresponding to the first switching device is identical to the first target ID or not; when the first ID is not identical to the first target ID, selecting a first access device, from the access devices connected with the first switching device, as an information synchronization device, to enable the first switching device to perform information synchronization with the target switching device through the information synchronization device; and sending, by the first switching device, the first target ID to other access devices, except the information synchronization device, connected with the first switching device to enable the other access devices except the information synchronization device to implement an information synchronization process with the target switching device through the first target ID.