The invention provides an energy management control method and device for a tandem-type hybrid electric vehicle, and the method comprises the steps: firstly selecting points A and B on an optimal power curve of an internal combustion engine, setting the power values of the internal combustion engine at the points A and B, the demanded power value of an automobile, a low-charge state value of a storage battery and a high-charge state value of the storage battery; secondly setting different working modes according to the size of demanded power and the difference of charge states of the storage battery during the driving of the automobile, and enabling the internal combustion engine to work in a section between the points A and B on the optimal power curve under most of conditions. The method provided by the invention can enable the working point of the internal combustion engine to be limited between the points A and B on the optimal power curve under most of conditions when the automobile is driven to operate, thereby improving the fuel economy and discharge performance of the whole automobile. The regeneration braking of a motor can improve the utilization rate of energy when the automobile is braked.