The invention discloses a combined electric energy control system and control method for an electric vehicle. A storage battery module is connected with a motor system in parallel; a supercapacitor is connected with the motor system in parallel; a first converter is connected with the storage battery module in series and then is connected with a second converter, the supercapacitor and a peripheral power supply system in parallel separately; and a domestic power supply system is connected with the first converter in series and then is connected with the storage battery module in parallel. According to the control method, the storage battery module can be charged by the domestic power supply system; or the supercapacitor can be rapidly charged by the peripheral power supply system, and then the storage battery module is charged by the supercapacitor; when the vehicle needs to run at high power, the supercapacitor directly supplies power to the motor system; and when the supercapacitor is low in electric quantity, the storage battery module can reversely charge the supercapacitor. The combined charging system provided by the invention is a combination of rapid charge and normal charge, so that the use efficiency of the electric energy of the vehicle can be improved on the basis that the charging time of the electric vehicle can be shortened.