Based on the analysis of HCFC-22 consumption in China,the trend of HCFC-22 production and HFC-23 emission was predicted.It was dwelled upon that the increase of HCFC-22 production was rational,which steam from development of some related sectors in China.Also the abatement effect of Clean Development Mechanism(CDM) project is demonstrated.The result shows that annual reduction effect of CDM project amount to 66.79×106 tons CO2-eq.However,predicted yield of HFC-23 would be 1.6×104 tons in 2015,with 6×103 ton...