The embodiment of the invention provides a method and device for obtaining configuration of a unified power flow controller. The method comprises the steps that at least two configuration lines of the unified power flow controller (UPFC) are determined according to power flow distribution of the lines; running modes of the UPFC configuration lines and configuration parameters of the UPFC are determined; failure analysis is conducted on the UPFC configuration lines according to the determined running modes and configuration parameters, and configuration parameters, and the power flow transferring states of the UPFC configuration lines after being failed are obtained; the UPFC configuration line corresponding to the optimal power flow transferring state is determined as the final configuration mode. According to the method and device, by means of UPFC optimizing configuration on multiple channels and multiple running modes, sectional power flow distribution is balanced, the thermal stability margin is increased, and the transmission capacity is improved to the maximum limit.