Abstract: Catalyst is the key to the selective catalytic reduction (SCR) of NOx，and its properties are directly related to the effect of NOx removal. In the last decade，low temperature SCR has received much attention due to its economics. This review summarizes th research status in the low temperature SCR catalyst，including noble metals，metal oxides，zeolites and carbon materials catalysts. The carbon materials catalysts demonstrate good activity and stability at low temperature，and have abetter application prospect.