The invention provides a method and a device for planning a route of an electric car, which are used for providing a global optimum route to the running of the electric card, and can get ready for the next travelling after the electric car arrives at the destination. The method comprises the following steps: determining the position information of each candidate charging station and each candidate charging station sequence according to acquired predetermined starting position information, destination position information, charging facility information of the destination and initial electric quantity; aiming at each candidate charging station sequence, respectively calculating the route parameters from the starting point, through the candidate charging stations included in the candidate charging station sequence in sequence and to the destination point, and selecting the optimal route according to the route parameter of each candidate charging station sequence and a predetermined route selection rule.