PURPOSE: A nano silver wire manufacturing method using ionic liquid is provided to uniformly manufacture a nano silver wire of which diameter is less than 100 nanometers and length is over 10 micron in liquid. CONSTITUTION: A nano silver wire manufacturing method using ionic liquid manufactures a nano silver wire by causing reduction reaction of mixture including a silver halide precursor, a reducing solvent, and a capping reagent with polyol. The reduction reaction is caused at the mixture with the ionic liquid as additive. The ionic liquid is a compound which is comprised of organic cation included imidazolium group and organic or inorganic anion and is shown as a monomer form indicated in chemical formula 1 or as a micromolecule form indicated in chmical formula 2. 1,3- Dimethyl imidazolium, 1,3- diethyl imidazolium, 1- ethyl -3- methylimidazolium, BMI, 1- hexyl -3- methylimidazolium, 1- octyl -3- methylimidazolium, 1- decyl -3- methylimidazolium, 1- dodecyl -3- methylimidazolium, and 1- tetradecyl -3- methylimidazolium is used as ionic liquid cation of a monomer form in the ionic liquid.