Nanoporous metals with bicontinuous porous network, high specific surface area, and low density have shown promising application as light-weight structural materials and high-performance functional material in actuators, sensors, and various energy devices. Decreasing the ligament size has been widely proved to a strengthening approach for nanoporous metals: smaller, stronger. Recently, monolithic hierarchical nanoporous gold has also fabricated with enhanced mechanical properties and much lower density. On top of tuning ligament size and structural hierarchy, this work further explores the further strengthening of nanoporous metals by forming bicontinuous Cu/Au nanocomposites in the local ligaments. In this work, nanoporous Cu/Au nanocomposites was prepared by combining electrochemical dealloying and electrodeposition techniques. The nanoporous Cu/Au nanocomposites show dual-phase spinodal structure with well controlled chemical composition and microstructure. Their mechanical behaviours were explored via microcompression tests.