A　large　number　of　online　social　communities　have　been　founded　on　the　internet.　Most　people,　in　such　online　social　communities,　develop　good　relationships,　believe　in　each　other　and　share　business　experiences.　Relationship　marketing,　based　on　online　social　network,　becomes　an　important　marketing　channel.　Based　on　the　survey　of　customers　of　Changzhou　Yuexing　Furniture　Global　Harbor　(CYFGH),　the　relationship　between　customer　loyalty　and　relationship　marketing　are　examined.　The　results　show　that,　improvements　of　interaction　frequency　between　suppliers　and　customers,　as　well　as　professional　knowledge　of　suppliers,　can　advance　relationship　quality　between　suppliers　and　customers,　which　will　enhance　customer　loyalty　indirectly.　In　addition,　the　stronger　customer　feeling　is,　the　better　relationship　quality　will　be.　Once　suppliers　develop　good　relationship　quality　with　their　customers,　customers　will　share　their　business　experiences　with　others,　and　suppliers　will　not　only　retain　existing　customers,　but　also　will　obtain　potential　customers　through　online　social　communities.　©　2016　Inderscience　Enterprises　Ltd.