The industry ethernet and the OPC technology were introduced, and one kind of realizing isomerism system integration scheme based on the industry ethernet and OPC technology was proposed. The design method of the representative MODBUS/TCP OPC date access server based on Delphi7 and Huafu OPC Tool Kit were elaborated. The result indicates that the scheme causes the data transfer and share between the isomerism platform are possibly, and provides a effective feasible way for enterprises automated transformation and promotion.