By　using　mapping　knowledge　domain,　this　paper　analyzes　the　literature　from　2005　to　2013　of　user　behavior　in　network　community,　the　results　show　that　with　the　development　of　the　Internet　and　the　maturity　of　the　social　media,　the　research　in　this　field　is　increasing.　Now,　the　papers　mainly　focus　on　the　study　of　the　user　behavior,　virtual　community　and　online　community,　and　the　chief　methods　are　structural　equation　model　and　social　network　analysis,　also,　they　have　a　deep　analyze　on　trust　as　an　influence　factor.　First,　to　have　an　overall　understanding　of　the　research　situation,　this　paper　analyzes　three　aspects　as　follow:　the　information　of　the　papers,　the　author　of　the　papers　and　the　research　institutions,　second,　it　focuses　on　the　research　frontier　and　the　cited　references.　©　(2014)　Trans　Tech　Publications,　Switzerland.