Altogether 1 052 energy conservation and emission reduction ( ECEＲ) policies in China from 1997 to 2013 are quantified from three dimensions: policy efforts，policy measures and policy objectives． How the synergy between measures and objectives of ECEＲ policies influences the effect of ECEＲ is studied using e-conometric models for different synergies between measures and objectives． Besides，the synergy，as well as its application by the government，between the measures and objectives in China is analyzed． The findings in-dicate that in ECEＲ policies，different synergies between the measures and objectives based on the administra-tive measure or guidance measure have significant discrepancies in their effects on ECEＲ，and the govern-ment’s usage of different synergies between the measures and objectives is also obviously different，as needs to be further improved． This paper clarifies the effect of different synergies between measures and objectives，and provides theoretical evidence for the establishment and effective implementation of synergy mechanism of EC-EＲ in China．