Nowadays,researchers pay more attention to the atmospheric CO,which are including the chemical characteristics of atmospheric CO and its indirect effects on the climate,environment pollution monitoring,the source and sink,the distribution characteristics and change rules of its concentration and so on. In order to understand the research status well,we carried out a preliminary summary about the research methods of atmospheric CO based on the former research. The purpose of this study is to give some reasonable suggestions to improve the observation of the Polar Regions and the atmospheric chemical models.