2011 IEEE International conference on nano/micro engineered and molecular systems (IEEE-NEMS 2011) was held in Kaohsiung，Taiwan during February 20-23，2011. The conference brought together 400 leading scientists and researchers world-wide to disseminate their most recent and advanced findings in MEMS and Nanotechnology. In this review，the current research in microfluidics and LOC，bio-MEMS devices and systems，metamaterial and its application，and new transducer system was introduced. The prospect of micro/nano technology was also analyzed. The success of this conference signifies that the micro/nano technology has been one of the main technologies which effect the development of the world and the human life.