Abstract: The nano-silver powders were synthesized through radiation reduction method using electron beam as the radiation source and silver oxalate as the silver source. Then, the synthesized silver powders and acrylic resins were directly mixed together to prepare aqueous ink. In comparison, nano-silver powders with the same particle size range were synthesized through normal chemical reduction process, then mixed together with acrylic resin to form the aqueous ink. The silver powders were characterized by Scanning Electron Microscope (SEM) and Thermogravimetric (TG) analysis. The electrical conductivity of casted ink film was also investigated using a multi-meter. Results show that aqueous ink can be made through mixing nano-silver powders synthesized by radiation reduction method with the acrylic resins. The ink shows good dispersion stability. After solidification, it has excellent conductivity and good adhesion with the substrate.