The invention relates to a MnO2/H-TiO2 nano composite array electrode material applied to a super capacitor and a preparation method thereof, belonging to the technical field of nanometer functional materials and energy storage and conversion. An in situ secondary anodic oxidation method is used to prepare an ordered TiO2 nanotube array as a substrate, then then the ordered TiO2 nanotube array is subjected to crystallization annealing processing, a H-TiO2 nanotube array is obtained through electrochemical hydrogenation reduction, and finally the MnO2/H-TiO2 nano composite array electrode material is obtained through depositing high specific capacitance MnO2 at the inner and outer surfaces of nanotubes. The specific capacitance of the electrode material prepared by the invention can reach 650.oF*g-1 when current density is 1mA*mg-1, and the specific capacitance still can be maintained above 90% after 1000 rounds of cycle charge and discharge when the current density is 5mA*mg-1. The MnO2/H-TiO2 nano composite array electrode material has the advantages of simple process, low cost, environment friendliness and easy implementation and is favorable for large-scale preparation and application.