From the Angle of self-organization system discusses the issue of migrant children urban social adaptation is advantageous to the comprehensive and in-depth understanding migrant children social adaptation problem. This paper raises the migrant children background of urban social adaptation，then summarizes the connotation and characteristics of self-organization system，and then demonstrates the migrant children city social adaptation is a self-organizing system evolving process，finally it is pointed out that from the Angle of self-organization system concerned with the problem of migrant children social adaptability inspired.