The utility model relates to a bypass load transfer vehicle for a power distribution system. The vehicle comprises an automobile chassis and a compartment, wherein the compartment is arranged on the automobile chassis and comprises a high-low voltage switch cabinet, a D-Y conversion oil-immersed transformer, a cable and a cable winch; a front work cabin, a middle work cabin and a back work cabin which are respectively independent are arranged in the compartment; fire partitions are arranged among the front cabin, the middle cabin and the back cabin; the high-low voltage switch cabinet is arranged in the front work cabin; the D-Y conversion oil-immersed transformer is arranged in the middle cabin; the cable winch is arranged in the back cabinet; and the cable is wound on the cable winch. According to the technical scheme, a bypass operation method is used in the condition that the power distribution system is not powered off, so that power-off examination of a managed distribution transformer, an overhead line and other lines is achieved; and the bypass load transfer vehicle is matched with vehicles of other functions, so that power security is provided for important targets. The bypass load transfer vehicle is high in work maneuverability and arranged compactly.