▎ 摘　　要

NOVELTY - Preparing nano-silver conductive ink comprises (a) adding silver nitrate and a reducing agent to a protective agent solution, reacting to obtain a reaction solution, where the protective agent comprises ammonium citrate, sodium aluminate and/or sodium silicate, (b) centrifuging the reaction solution to obtain precipitate, obtaining nano silver paste and (c) mixing the nano-silver paste with solvent, adhesive and stabilizing agent to obtain mixture, adding the nano graphene into the mixture, ultrasonically dispersing and adding fluorocarbon resin curing agent for ultrasonic dispersion to obtain the nano-silver conductive ink. USE - The method is useful for preparing nano-silver conductive ink. ADVANTAGE - The nano-silver conductive ink has low sintering temperature and good electrical conductivity.