Abstract: Graphene was grown on foam nickel to obtain Ni foam@ graphene hydrogel（NF@GH） by hydrothermal method, and then using cetyltrimethylammonium bromide（CTAB） as guiding agent, NF@GH@NiCoLDH was obtained by hydrothermal treatment at 120 ℃. The effect of graphene hydrogel on the electrochemical properties of the NF@GH@NiCoLDH composite was also investigated. The specific capacitance of NF@GH@NiCoLDH could reach 3658 mF cm^-2 at 1 mA cm^-2, and the retention rate of the specific capacitance is 67.5% at 15 mA cm^-2, which is higher than that of NF@NiCoLDH（58%）. And 62% of the capacitance is retained after 10000 cycles at 15 mA cm^-2, showing good cycle stability and rate performance. The asymmetric supercapacitor device was assembled with NF@GH@NiCoLDH as the positive electrode, which has a specific capacitance of 909 mF cm^-2 at 1 mA cm^-2, and the maximum energy density of the device is 0.25 mWh cm^-2, when the power density is 0.7 mW cm^-2.