With the increase of floating rural migrant worker families, there is prominent problems on the droppingout, losingmanagement or losingjob juvenile of urban floating population, for example, high crime rate. However, due to the identity of floating population, less attention paid by urban society, there are many problems in the social work intervention on the droppingout, losingmanagement or losingjob juvenile of floating population with limited effect. This paper suggests that the juvenile social work of urban community should cover the juvenile of floating population as soon as possible. Depending on the helpful role of community, enterprises and schools, social work service agencies, society, enterprises, schools and families should cooperate to solve the problems of school droppingout, losing management and losing job and make the group return to society and integrate into society as early as possibly； peasantworker； community intervene； enterprise intervene.