In　recent　years,　the　developing　speed　of　emerging　technologies　keep　accelerating.　Correctly　understanding　the　future　trend　of　technologies　can　help　the　government　and　enterprises　formulate　R&D　strategies,　and　then　seize　the　chance.　Therefore,　the　research　in　Technology　Trend　has　increasingly　becomes　a　hotspot　in　technology　management.　First,　the　article　puts　forward　four　main　aspects　that　technological　developing　trend　need　to　be　investigated.　Then,　a　new　technology　trend　evaluation　system　is　proposed　which　describes　the　developing　trend　of　a　particular　emerging　technology　through　these　four　aspects　based　on　patent　information.　During　the　evaluation　process,　several　patent　analysis　methods　are　used　after　some　improvements.　At　last,　an　empirical　study　is　given.　The　results　show　good　feasibility　and　scientific　of　this　evaluation　frame,　also　provides　support　for　the　better　management　of　emerging　technologies.　©　2010　IEEE.