NOVELTY - The system has a vehicle operation state measurement device (300) connected with a super capacitor group (400), an electric generator group (401) and a management controller (500). The super capacitor group is connected with a navigation receiving device (100), a geographical information database (101), a geomagnetism north finding device (200) and an inertia measuring device (201) that are utilized for processing and executing super capacitor real time electric quantity management according to environment condition. The database stores vehicle geographical position information.    USE - Mix-power vehicle composite power supply super capacitor real-time electric quantity management system.    ADVANTAGE - The system increases usage efficiency of a super capacitor so as to reduce number of required capacitors in a vehicle, thus saving space and reducing vehicle power supply system cost. The system obtains vehicle geographical position information through current position of a satellite so as to calculate driving route highest and lowest altitude points and potential energy difference, so that capacitor charging and discharging operation can be switched according to a vehicle operation state, thus satisfying electric quantity power requirements and brake energy recovery capacity requirements, and hence balancing electric quantity and spare super capacitor capacity in a better manner. The system improves dynamic performance of the vehicle and increases braking energy recovery efficiency and driving mileage of the vehicle.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a mix-power vehicle composite power supply super capacitor real-time electric quantity management method.    DESCRIPTION OF DRAWING(S) - The drawing shows a block diagram of a mix-power vehicle composite power supply super capacitor real-time electric quantity management system.'(Drawing includes non-English language text)'    Navigation receiving device (100)    Geographical information database (101)    Geomagnetism north finding device (200)    Inertia measuring device (201)    Vehicle operation state measurement device (300)    Super capacitor group (400)    Electric generator group (401)    Management controller (500)