Arc　oscillation　is　an　important　process　parameter　that　can　significantly　improve　the　quality　of　the　deposition.　However,　the　mechanism　and　characteristics　of　arc　oscillation　on　the　microstructure　and　mechanical　properties　are　unclear　during　wire　arc　additive　manufacturing　(WAAM)　process.　In　this　study,　the　microstructure　evolution　and　mechanical　properties　of　GH4169　superalloy　fabricated　by　WAAM　with　arc　oscillation　were　investigated　and　compared　with　the　corresponding　as　deposited　samples.　Results　showed　that　the　tensile　properties　(ultimate　tensile　strength　and　yield　strength)　of　the　deposition　with　arc　oscillation　were　improved　with　retention　in　elongation　above　45%.　With　the　arc　oscillation,　Laves　phase　was　significantly　suppressed　and　the　content　of　Laves　phase　decreased.　Further,　arc　oscillation　induced　texture　randomization　with　lower　texture　intensity　(10.15　mud),　achieving　a　prominent　reduction　by　36.7%.　From　the　present　study,　it　is　evident　that　arc　oscillation　during　WAAM　is　a　potential　manufacturing　route　that　can　effectively　tailor　the　microstructure.　©　2023　Elsevier　B.V.