The network-level and interface-level isomorphic ways which are needed for network integrating are put forward. After comparing isomorphic ways, ethernet can be used to realize network-level integration and OPC technology can be used to realize interface-level integration. According to the requirements of container cranes network control systems’integration and the practice situation of one container terminal, the data conformity are realized by using the network-level and interface-level isomorphic ways based on the Ethernet and OPC technology. The practice integrated system runs all right. The test results show that the isomorphic ways is effective.