In　this　paper,　three　different　roughening　route　planning　methods　(free　coarsening,　vertical　coarsening,　circling　coarsening)　were　designed　to　pre-treat　the　basement　membrane.　The　platinum　IPMC　was　prepared　by　electroless　plating　to　observe　their　surface　morphology　and　test　their　performances　such　as　output　displacement　and　blocking　force.　The　results　show　that　the　platinum　electrode　of　the　vertical　coarsening　route　planning　of　IPMC　is　distributed　in　the　shape　of　fish　scales　and　is　the　most　compact　and　regular　on　the　surface　electrode.　The　thickness　of　the　platinum　electrode　layer　is　about　13 μm,　the　maximum　output　displacement　is　54.89　mm,　the　blocking　force　of　15.46 mN,　and　the　maximum　strain　energy　density　of　the　IPMC　of　2.44 KJ/m3.　Vertical　coarsening　route　planning　can　significantly　improve　the　electrodynamic　properties　of　IPMC,　and　it　is　recommended　that　the　surface　roughening　of　IPMC　be　utilized　in　the　research　and　application　of　IPMC.　It　lays　a　certain　experimental　foundation　for　the　performance　improvement　and　innovation　research　and　development　of　IPMC　in　the　subsequent　stage.　©　2020　The　Author(s).　Published　by　Informa　UK　Limited,　trading　as　Taylor　&　Francis　Group.