The　patterning　of　micro　particles　in　microfluidic　networks　is　important　for　many　biological　and　medical　applications.　In　this　paper,　the　micro　particles　patterns　that　driven　by　standing　surface　acoustic　wave　(SSAW)　are　investigated　in　microchannel.　A　two-dimensional　particle　pattern　is　formed　by　the　micro　particles　under　the　actuation　of　one　column　SSAW.　Two　forces,　i.e.,　chaining　force　generated　by　interaction　of　polarized　particles,　and　acoustic　radiated　force　(ARF)　generated　by　the　surface　acoustic　wave　(SAW),　should　dominate　the　particles　assembling　process.　The　intricate　and　interesting　interplay　between　acoustic　radiation　force　and　chaining　force　on　the　particles　is　studied.　The　analysis　and　experiment　reveal　that　the　ARF　drives　the　particles　to　form　broken　line　along　the　nodal　line　(one-dimensional　particle　pattern)　where　the　ARF　is　zero　and　the　chaining　force　can　dominate　the　particles　to　form　array　points　(two-dimensional　particle　pattern)　in　the　area　of　node.　The　results　will　be　useful　for　deeply　understanding　the　particles　moving　and　precisely　control　the　particles　patterns　induced　by　SSAW.　©　2018　Elsevier　B.V.