Reducing energy-related carbon emissions while maintaining the industrial economic development was an inevitable choice for achieving sustainable development. Based on the extend Kaya identity and the logarithmic mean Divisia index method（LMDI）, a decoupling efforts decomposition model was constructed, which were adopted to analyze energy structure, energy intensity, industrial structure and industrial output for industrial carbon emissions impact and their relative decoupling efforts. The results showed that industrial output factor played a promoting role in industrial carbon emissions, energy intensity factor and industrial structure factor had some inhibitory effect, and energy structure factor's role was very limited. 2002—2012, Liaoning province was in a weak decoupling effort period, and the efforts was not ideal. 2012—2014, Liaoning province was in a strong decoupling effort period, the effects was significant for reducing carbon emissions.