The invention discloses a mixed super-capacitor based on powder blue anode and ruthenium oxide cathode and a fabrication method of the mixed super-capacitor, belonging to the fabrication technical range of capacitor. The capacitor comprises a cylindrical typed structure and a square typed structure; the mixed super-capacitor with large energy storage density and high discharging power is formed by sealing the powder blue anode, potassium hydroxide water electrolyte and ruthenium oxide cathode inside a shell. The powder blue anode takes the outcome prepared by electro-chemical reaction method as raw material, in which carbon nano-tube and nickel carbonyl with suitable quantity is mixed to be taken as additive and foaming nickel is mixed to be taken as substrate, so as to fabricate the anode. The ruthenium oxide cathode adopts nano-ruthenium prepared by chemical method as raw material, in which carbon nano-tube and nickel carbonyl with suitable quantity is mixed to be taken as additive and foaming nickel is mixed to be taken as substrate, so as to fabricate the cathode. The assembled capacitor has the working voltage of 1.4V, maximum energy storage density of 23Wh/kg, peak discharging power of 8kW/kg. The mixed super-capacitor is widely applied to the fields of industry, traffic, electrons and military, etc.