The invention provides an OpenFlow business data transmission method and device. The method comprises the following steps: determining a network topological graph of a software defined network for electric power business data transmission; determining at least two transmission paths of the electric power business data according to the network topological graph; monitoring a communication fault of the software defined network; and switching the at least two transmission paths according to the monitored network communication fault to transmit the electric power business data. Therefore, in the case of the network communication fault, the electric power business data can be transmitted by other transmission paths, thereby improving the transmission ability of the electric power business data.