This report analyzed the remote rural poverty left-behind elderly existing object "specialization" "fragmentation" collective "hollowing out" of home town "management" "bored" five questions, to professional point of view of social work from the micro, meso and macro needs assessment in three dimensions. Innovation on this basis the author puts forward the concept of "social work +", build the "+" social work intervention model interventional theory system, the main body system, interventional form system, method system, six system interventional funding system, assessment system, and according to the pattern of "+" social work intervention in action research, and then from four aspects to present practice exploration.