Cross-coupling　arc　(CCA)　forces　two　arcs　to　cross-couple　in　a　limited　space,　and　is　able　to　decouple　heat　tranfer,　force　transfer　and　mass　transfer　in　the　welding　process.　However,　the　main　arc　deflects　regularly　to　the　cathode　of　the　inter-wire　arc　(IWA)　(called　polar　zone　phenomena),　affecting　the　CCA　stability.　To　reduce　the　degree　of　polar　zone　phenomena　on　the　CCA,　a　method　to　adjust　the　IWA　posture　was　proposed,　and　the　effects　of　the　IWA　posture　on　the　CCA　characteristics　were　investigated.　A　synchronized　acquisition　system　with　high-speed　camera　and　electric　signal　was　adopted　during　the　experiment.　The　results　showed　that　adjusting　the　IWA　posture　is　feasible　and　effective　to　reduce　the　effects　of　polar　zone　phenomena,　and　increasing　the　current　angle　of　the　IWA　contributes　to　reducing　the　deflection　of　main　arc.　Increasing　the　height　of　the　cathode　wire　is　an　effective　way　to　reduce　the　deflection　of　main　arc,　and　reasonably　increasing　the　interval　of　wires　is　able　to　reduce　the　deflection　of　main　arc.　Both　methods　have　more　effect　on　the　IWA　current　and　the　main　arc　voltage　than　changing　the　wire　angles.　Increasing　the　anode-cathode　wire　angles　has　little　effect　on　the　deflection　of　main　arc,　but　only　increasing　the　anode　wire　angle　could　increase　or　decrease　the　deflection　of　main　arc.　Both　methods　have　smaller　effect　on　the　IWA　current　and　the　main　arc　voltage　than　changing　the　height　of　the　wires.