An aqueous method for creating metallic macroporous nickel films using silicon-based macroporous silicon as the template was investigated. macroporous silicon was immersed in a prepared nickel bath and replication was achieved through complete nickel displacement of the silicon in the pore sidewalls. Macropores were directly etched onto an area selected from the polished surface side in a mixture of HF and organic solvent, without pre-patterning. The reactions in the process were found to be able to proceed until a complete material change from silicon to nickel had taken place, but the mother template structure was well copied. The field-emission scanning electron microscopy (FESEM) images showed a solid nickel matrix containing arrays of straight macropores after the wet reaction, indicating a positive replica of the initial structure of macroporous silicon. Self-peeling is discovered after the full formation of the porous nickel film.