A method for identifying a synchronization priority, comprising determining a synchronization method adopted by a node, wherein the synchronization method includes: GNSS-based synchronization and eNB-based synchronization; determining a synchronization priority of the node according to a connection relationship between the node and a Global Navigation Satellite System, GNSS, and a relative relationship between the node and a coverage scope of an eNB (11, 21); wherein, when determining that the synchronization method is the GNSS-based synchronization, determining the synchronization priority of the node according the connection relationship between the node and the GNSS and the relative relationship between the node and the coverage scope of the eNB comprises: when the node is in the coverage of the eNB and the node is able to directly obtain information of the GNSS, determining the synchronization priority of the node as a first priority; when the node is out of the coverage of the eNB and the node is able to directly obtain the information of the GNSS, determining the synchronization priority of the node as a second priority; when the node is not able to directly obtain the information of the GNSS, but the node is able to obtain the information of the GNSS via another node, determining the synchronization priority of the node as a third priority; otherwise, determining the synchronization priority of the node as a fourth priority; after the synchronization priority of the node has been determined, configuring a synchronization sequence and an in coverage flag of the node according to the synchronization priority of the node; wherein combination of the synchronization sequence and the in coverage flag of the node is used to identify the synchronization priority of the node (12, 22), so that other nodes distinguish different synchronization priorities; wherein the connection relationship between the node and the GNSS comprises one of the following: the node is able to directly obtain information of the GNSS, and the node is not able to directly obtain the information of the GNSS but the node is able to obtain the information of the GNSS via another node; wherein the relative relationship between the node and the coverage scope of the eNB comprises one of the following: the node is in the coverage of the eNB, and the node is out of the coverage of the eNB. determining a synchronization method adopted by a node, wherein the synchronization method includes: GNSS-based synchronization and eNB-based synchronization; determining a synchronization priority of the node according to a connection relationship between the node and a Global Navigation Satellite System, GNSS, and a relative relationship between the node and a coverage scope of an eNB (11, 21); wherein, when determining that the synchronization method is the GNSS-based synchronization, determining the synchronization priority of the node according the connection relationship between the node and the GNSS and the relative relationship between the node and the coverage scope of the eNB comprises: when the node is in the coverage of the eNB and the node is able to directly obtain information of the GNSS, determining the synchronization priority of the node as a first priority; when the node is out of the coverage of the eNB and the node is able to directly obtain the information of the GNSS, determining the synchronization priority of the node as a second priority; when the node is not able to directly obtain the information of the GNSS, but the node is able to obtain the information of the GNSS via another node, determining the synchronization priority of the node as a third priority; when the node is in the coverage of the eNB and the node is able to directly obtain information of the GNSS, determining the synchronization priority of the node as a first priority; when the node is out of the coverage of the eNB and the node is able to directly obtain the information of the GNSS, determining the synchronization priority of the node as a second priority; when the node is not able to directly obtain the information of the GNSS, but the node is able to obtain the information of the GNSS via another node, determining the synchronization priority of the node as a third priority; otherwise, determining the synchronization priority of the node as a fourth priority; after the synchronization priority of the node has been determined, configuring a synchronization sequence and an in coverage flag of the node according to the synchronization priority of the node; wherein combination of the synchronization sequence and the in coverage flag of the node is used to identify the synchronization priority of the node (12, 22), so that other nodes distinguish different synchronization priorities; wherein the connection relationship between the node and the GNSS comprises one of the following: the node is able to directly obtain information of the GNSS, and the node is not able to directly obtain the information of the GNSS but the node is able to obtain the information of the GNSS via another node; wherein the relative relationship between the node and the coverage scope of the eNB comprises one of the following: the node is in the coverage of the eNB, and the node is out of the coverage of the eNB.