The monolithic foamed gold was synthesized by a template deposit-dealloying method with polystyrene (PS) template and gold silver electroless depositing and dealloying. The results indicate that the deposited gold has the thickness of 70~90 nm, and the deposited Au/Ag has the thickness of 200~400 nm after silver electroless depositing on the surface of Au/PS. The self-supported hollow spheres Au40Ag60 alloy was obtained after the template removed. The ultra-low-density gold monoliths with multimodal pore structure, hollow spheres of about 10 μm, and density of 0.8 g/cm3 was obtained after dealloying heat treatment