Provided is a nickel nanowire current collector, which is in a foaming shape, and is a three-dimensional net structure formed by nickel nano wires. The invention is advantageous in that the process issimple and controllable, the size of the nickel nano wires is controllable in the preparation process, no complex devices and much energy consumption is required, and demand on operators is quite low, and cost is low, and industrialized batch production can be easy to realize; the nickel nano wire current collector prepared by the method is a three-dimensional net structure which is formed by thenickel nano wires, and thereby more growing surfaces can be provided for active substances, and the area ratio capacity of the electrode can be increased; with the running of electrochemical reactionand the participation of the nickel nano wires in the reaction, the nickel nano wires and the active material can be combined at the original position to form a more favorable electronic transferringpath, and electrochemistry performance like the ratio capacity and cycling stability of the electrode can be greatly improved.